78412770988 has 24 divisors (see below), whose sum is σ = 137970653184. Its totient is φ = 38992674000.

The previous prime is 78412770979. The next prime is 78412771013. The reversal of 78412770988 is 88907721487.

It is a super-2 number, since 2×78412770988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4997131 + ... + 5012797.

It is an arithmetic number, because the mean of its divisors is an integer number (5748777216).

Almost surely, 2^78412770988 is an apocalyptic number.

It is an amenable number.

78412770988 is a deficient number, since it is larger than the sum of its proper divisors (59557882196).

78412770988 is a wasteful number, since it uses less digits than its factorization.

78412770988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22413 (or 22411 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 61.

The spelling of 78412770988 in words is "seventy-eight billion, four hundred twelve million, seven hundred seventy thousand, nine hundred eighty-eight".