78250730751 has 16 divisors (see below), whose sum is σ = 119666590720. Its totient is φ = 50484341880.

The previous prime is 78250730717. The next prime is 78250730773. The reversal of 78250730751 is 15703705287.

78250730751 is a `hidden beast` number, since 78 + 2 + 507 + 3 + 0 + 75 + 1 = 666.

It is not a de Polignac number, because 78250730751 - 2¹⁸ = 78250468607 is a prime.

It is a super-2 number, since 2×78250730751² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78250730697 and 78250730706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78250730351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46743925 + ... + 46745598.

It is an arithmetic number, because the mean of its divisors is an integer number (7479161920).

Almost surely, 2^78250730751 is an apocalyptic number.

78250730751 is a deficient number, since it is larger than the sum of its proper divisors (41415859969).

78250730751 is a wasteful number, since it uses less digits than its factorization.

78250730751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93489563 (or 93489557 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 45.

The spelling of 78250730751 in words is "seventy-eight billion, two hundred fifty million, seven hundred thirty thousand, seven hundred fifty-one".