78374852692 has 12 divisors (see below), whose sum is σ = 137165933716. Its totient is φ = 39184585920.

The previous prime is 78374852669. The next prime is 78374852737. The reversal of 78374852692 is 29625847387.

It can be written as a sum of positive squares in 2 ways, for example, as 67186713616 + 11188139076 = 259204^2 + 105774^2 .

It is a super-2 number, since 2×78374852692² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78374852692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647409 + ... + 758872.

Almost surely, 2^78374852692 is an apocalyptic number.

It is an amenable number.

78374852692 is a deficient number, since it is larger than the sum of its proper divisors (58791081024).

78374852692 is a wasteful number, since it uses less digits than its factorization.

78374852692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420218 (or 1420216 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 61.

The spelling of 78374852692 in words is "seventy-eight billion, three hundred seventy-four million, eight hundred fifty-two thousand, six hundred ninety-two".