102561055617 has 16 divisors (see below), whose sum is σ = 137323450368. Its totient is φ = 68086954320.

The previous prime is 102561055559. The next prime is 102561055637. The reversal of 102561055617 is 716550165201.

It is a happy number.

It is not a de Polignac number, because 102561055617 - 2⁷ = 102561055489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102561055637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606808 + ... + 757190.

It is an arithmetic number, because the mean of its divisors is an integer number (8582715648).

Almost surely, 2^102561055617 is an apocalyptic number.

It is an amenable number.

102561055617 is a deficient number, since it is larger than the sum of its proper divisors (34762394751).

102561055617 is a wasteful number, since it uses less digits than its factorization.

102561055617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151340.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 102561055617 in words is "one hundred two billion, five hundred sixty-one million, fifty-five thousand, six hundred seventeen".