102577997285 has 16 divisors (see below), whose sum is σ = 128152254576. Its totient is φ = 78750724608.

The previous prime is 102577997267. The next prime is 102577997299. The reversal of 102577997285 is 582799775201.

It is a Cunningham number, because it is equal to 320278²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 25587841444 + 76990155841 = 159962^2 + 277471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102577997285 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3784274 + ... + 3811283.

It is an arithmetic number, because the mean of its divisors is an integer number (8009515911).

Almost surely, 2^102577997285 is an apocalyptic number.

It is an amenable number.

102577997285 is a deficient number, since it is larger than the sum of its proper divisors (25574257291).

102577997285 is an equidigital number, since it uses as much as digits as its factorization.

102577997285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7595672.

The product of its (nonzero) digits is 22226400, while the sum is 62.

The spelling of 102577997285 in words is "one hundred two billion, five hundred seventy-seven million, nine hundred ninety-seven thousand, two hundred eighty-five".