78112970552 has 8 divisors (see below), whose sum is σ = 146461819800. Its totient is φ = 39056485272.

The previous prime is 78112970531. The next prime is 78112970567. The reversal of 78112970552 is 25507921187.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78112970552² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78112970497 and 78112970506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4882060652 + ... + 4882060667.

It is an arithmetic number, because the mean of its divisors is an integer number (18307727475).

Almost surely, 2^78112970552 is an apocalyptic number.

It is an amenable number.

78112970552 is a deficient number, since it is larger than the sum of its proper divisors (68348849248).

78112970552 is a wasteful number, since it uses less digits than its factorization.

78112970552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764121325 (or 9764121321 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 78112970552 in words is "seventy-eight billion, one hundred twelve million, nine hundred seventy thousand, five hundred fifty-two".