78263044972 has 12 divisors (see below), whose sum is σ = 156526090000. Its totient is φ = 33541304976.

The previous prime is 78263044919. The next prime is 78263044987. The reversal of 78263044972 is 27944036287.

78263044972 is an admirable number.

It is a super-2 number, since 2×78263044972² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397554347 + ... + 1397554402.

Almost surely, 2^78263044972 is an apocalyptic number.

It is an amenable number.

78263044972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78263044972 is a wasteful number, since it uses less digits than its factorization.

78263044972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795108760 (or 2795108758 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 78263044972 in words is "seventy-eight billion, two hundred sixty-three million, forty-four thousand, nine hundred seventy-two".