78196932552 has 32 divisors (see below), whose sum is σ = 195520888800. Its totient is φ = 26061836544.

The previous prime is 78196932529. The next prime is 78196932557. The reversal of 78196932552 is 25523969187.

It is a happy number.

It is a super-2 number, since 2×78196932552² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78196932492 and 78196932501.

It is not an unprimeable number, because it can be changed into a prime (78196932557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67777 + ... + 401232.

It is an arithmetic number, because the mean of its divisors is an integer number (6110027775).

Almost surely, 2^78196932552 is an apocalyptic number.

It is an amenable number.

78196932552 is an abundant number, since it is smaller than the sum of its proper divisors (117323956248).

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

78196932552 is a wasteful number, since it uses less digits than its factorization.

78196932552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475965 (or 475961 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The spelling of 78196932552 in words is "seventy-eight billion, one hundred ninety-six million, nine hundred thirty-two thousand, five hundred fifty-two".