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61061001200851 = 241276791566733
BaseRepresentation
bin11011110001000110111110…
…10010010100010011010011
322000012101010011100000120111
431320203133102110103103
531000410412301411401
6333511011532222151
715601340350354201
oct1570433722242323
9260171104300514
1061061001200851
1118501909359083
126a2204590a957
13280c048b41b42
1411115225b4071
1570d50b8d8e51
hex3788df4944d3

61061001200851 has 8 divisors (see below), whose sum is σ = 61336526170304. Its totient is φ = 60785659370880.

The previous prime is 61061001200839. The next prime is 61061001200873. The reversal of 61061001200851 is 15800210016016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61061001200851 - 25 = 61061001200819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61061001204851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45116520 + ... + 46450213.

It is an arithmetic number, because the mean of its divisors is an integer number (7667065771288).

Almost surely, 261061001200851 is an apocalyptic number.

61061001200851 is a deficient number, since it is larger than the sum of its proper divisors (275524969453).

61061001200851 is a wasteful number, since it uses less digits than its factorization.

61061001200851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91569741.

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 61061001200851 its reverse (15800210016016), we get a palindrome (76861211216867).

The spelling of 61061001200851 in words is "sixty-one trillion, sixty-one billion, one million, two hundred thousand, eight hundred fifty-one".

Divisors: 1 241 2767 666847 91566733 22067582653 253365150211 61061001200851