78248250736 has 20 divisors (see below), whose sum is σ = 152610003664. Its totient is φ = 38865024000.

The previous prime is 78248250727. The next prime is 78248250737. The reversal of 78248250736 is 63705284287.

It is a happy number.

It is a super-2 number, since 2×78248250736² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78248250737) 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, 16191345 + ... + 16196176.

Almost surely, 2^78248250736 is an apocalyptic number.

It is an amenable number.

78248250736 is a deficient number, since it is larger than the sum of its proper divisors (74361752928).

78248250736 is a wasteful number, since it uses less digits than its factorization.

78248250736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32387680 (or 32387674 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 78248250736 in words is "seventy-eight billion, two hundred forty-eight million, two hundred fifty thousand, seven hundred thirty-six".