102860512640 has 32 divisors (see below), whose sum is σ = 245900914560. Its totient is φ = 41144204800.

The previous prime is 102860512609. The next prime is 102860512649. The reversal of 102860512640 is 46215068201.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 102860512640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102860512649) 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, 80359136 + ... + 80360415.

It is an arithmetic number, because the mean of its divisors is an integer number (7684403580).

Almost surely, 2^102860512640 is an apocalyptic number.

102860512640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102860512640 is an abundant number, since it is smaller than the sum of its proper divisors (143040401920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102860512640 is an equidigital number, since it uses as much as digits as its factorization.

102860512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160719570 (or 160719558 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 102860512640 in words is "one hundred two billion, eight hundred sixty million, five hundred twelve thousand, six hundred forty".