876781157878836 has 72 divisors (see below), whose sum is σ = 2532927493736640. Its totient is φ = 250508491934976.

The previous prime is 876781157878799. The next prime is 876781157878867. The reversal of 876781157878836 is 638878751187678.

It is a super-2 number, since 2×876781157878836² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172733275 + ... + 177736733.

It is an arithmetic number, because the mean of its divisors is an integer number (35179548524120).

Almost surely, 2^{876781157878836} is an apocalyptic number.

It is an amenable number.

876781157878836 is an abundant number, since it is smaller than the sum of its proper divisors (1656146335857804).

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

876781157878836 is a wasteful number, since it uses less digits than its factorization.

876781157878836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698853 (or 5698848 counting only the distinct ones).

The product of its digits is 42485022720, while the sum is 90.

The spelling of 876781157878836 in words is "eight hundred seventy-six trillion, seven hundred eighty-one billion, one hundred fifty-seven million, eight hundred seventy-eight thousand, eight hundred thirty-six".