78771692272 has 240 divisors, whose sum is σ = 195630818112. Its totient is φ = 30062223360.

The previous prime is 78771692257. The next prime is 78771692287. The reversal of 78771692272 is 27229617787.

It is an interprime number because it is at equal distance from previous prime (78771692257) and next prime (78771692287).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95945622 + ... + 95946442.

Almost surely, 2^78771692272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78771692272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97815409056).

78771692272 is an abundant number, since it is smaller than the sum of its proper divisors (116859125840).

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

78771692272 is a wasteful number, since it uses less digits than its factorization.

78771692272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1017 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 58.

The spelling of 78771692272 in words is "seventy-eight billion, seven hundred seventy-one million, six hundred ninety-two thousand, two hundred seventy-two".