78745958330 has 32 divisors (see below), whose sum is σ = 156369095568. Its totient is φ = 28366272000.

The previous prime is 78745958309. The next prime is 78745958393. The reversal of 78745958330 is 3385954787.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1009269361 + 77736688969 = 31769^2 + 278813^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78745958330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7381721 + ... + 7392380.

Almost surely, 2^78745958330 is an apocalyptic number.

78745958330 is a deficient number, since it is larger than the sum of its proper divisors (77623137238).

78745958330 is a wasteful number, since it uses less digits than its factorization.

78745958330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14774162.

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 78745958330 in words is "seventy-eight billion, seven hundred forty-five million, nine hundred fifty-eight thousand, three hundred thirty".