78022867652 has 12 divisors (see below), whose sum is σ = 139870263036. Its totient is φ = 38059935360.

The previous prime is 78022867651. The next prime is 78022867721. The reversal of 78022867652 is 25676822087.

It can be written as a sum of positive squares in 2 ways, for example, as 34619812096 + 43403055556 = 186064^2 + 208334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78022867594 and 78022867603.

It is not an unprimeable number, because it can be changed into a prime (78022867651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237874433 + ... + 237874760.

It is an arithmetic number, because the mean of its divisors is an integer number (11655855253).

Almost surely, 2^78022867652 is an apocalyptic number.

It is an amenable number.

78022867652 is a deficient number, since it is larger than the sum of its proper divisors (61847395384).

78022867652 is a wasteful number, since it uses less digits than its factorization.

78022867652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475749238 (or 475749236 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 78022867652 in words is "seventy-eight billion, twenty-two million, eight hundred sixty-seven thousand, six hundred fifty-two".