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61066025001 = 3224677274957
BaseRepresentation
bin111000110111110100…
…011001100000101001
312211121210111111010200
4320313310121200221
52000030400300001
644015304502413
74261162435212
oct706764314051
9184553444120
1061066025001
11239971a7463
12ba02a7aa09
1359b2573807
142d542aa409
1518c6127086
hexe37d19829

61066025001 has 12 divisors (see below), whose sum is σ = 88210375812. Its totient is φ = 40708885536.

The previous prime is 61066024991. The next prime is 61066025011. The reversal of 61066025001 is 10052066016.

It is a happy number.

61066025001 is a `hidden beast` number, since 6 + 1 + 0 + 6 + 602 + 50 + 0 + 1 = 666.

61066025001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61066024991) and next prime (61066025011).

It can be written as a sum of positive squares in 2 ways, for example, as 49925433600 + 11140591401 = 223440^2 + 105549^2 .

It is not a de Polignac number, because 61066025001 - 26 = 61066024937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61066025011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84615 + ... + 359571.

It is an arithmetic number, because the mean of its divisors is an integer number (7350864651).

Almost surely, 261066025001 is an apocalyptic number.

It is an amenable number.

61066025001 is a deficient number, since it is larger than the sum of its proper divisors (27144350811).

61066025001 is a wasteful number, since it uses less digits than its factorization.

61066025001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299640 (or 299637 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 61066025001 in words is "sixty-one billion, sixty-six million, twenty-five thousand, one".

Divisors: 1 3 9 24677 74031 222093 274957 824871 2474613 6785113889 20355341667 61066025001