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61850914297 = 72785076911
BaseRepresentation
bin111001100110100110…
…100000110111111001
312220122111101222211121
4321212212200313321
52003132313224142
644225223425241
74316503045204
oct714646406771
9186574358747
1061850914297
112425a2573a7
12bba18b5221
135aa9065853
142dca62093b
15191eeb6c67
hexe669a0df9

61850914297 has 4 divisors (see below), whose sum is σ = 61935991936. Its totient is φ = 61765836660.

The previous prime is 61850914267. The next prime is 61850914303. The reversal of 61850914297 is 79241905816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-61850914297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61850914217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42537729 + ... + 42539182.

It is an arithmetic number, because the mean of its divisors is an integer number (15483997984).

Almost surely, 261850914297 is an apocalyptic number.

It is an amenable number.

61850914297 is a deficient number, since it is larger than the sum of its proper divisors (85077639).

61850914297 is an equidigital number, since it uses as much as digits as its factorization.

61850914297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85077638.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 61850914297 in words is "sixty-one billion, eight hundred fifty million, nine hundred fourteen thousand, two hundred ninety-seven".

Divisors: 1 727 85076911 61850914297