102620917768 has 8 divisors (see below), whose sum is σ = 192414220830. Its totient is φ = 51310458880.

The previous prime is 102620917757. The next prime is 102620917913. The reversal of 102620917768 is 867719026201.

It can be written as a sum of positive squares in only one way, i.e., 69802696804 + 32818220964 = 264202^2 + 181158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6413807353 + ... + 6413807368.

Almost surely, 2^102620917768 is an apocalyptic number.

It is an amenable number.

102620917768 is a deficient number, since it is larger than the sum of its proper divisors (89793303062).

102620917768 is a wasteful number, since it uses less digits than its factorization.

102620917768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12827614727 (or 12827614723 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 102620917768 in words is "one hundred two billion, six hundred twenty million, nine hundred seventeen thousand, seven hundred sixty-eight".