102712849878 has 32 divisors (see below), whose sum is σ = 212070988800. Its totient is φ = 33130262880.

The previous prime is 102712849753. The next prime is 102712849879. The reversal of 102712849878 is 878948217201.

It is a happy number.

It is a super-2 number, since 2×102712849878² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102712849879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3360501 + ... + 3390927.

It is an arithmetic number, because the mean of its divisors is an integer number (6627218400).

Almost surely, 2^102712849878 is an apocalyptic number.

102712849878 is an abundant number, since it is smaller than the sum of its proper divisors (109358138922).

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

102712849878 is a wasteful number, since it uses less digits than its factorization.

102712849878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48612.

The product of its (nonzero) digits is 3612672, while the sum is 57.

The spelling of 102712849878 in words is "one hundred two billion, seven hundred twelve million, eight hundred forty-nine thousand, eight hundred seventy-eight".