78506653667752 has 32 divisors (see below), whose sum is σ = 155300298120000. Its totient is φ = 37102652978688.

The previous prime is 78506653667711. The next prime is 78506653667789. The reversal of 78506653667752 is 25776635660587.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588191977 + ... + 588325432.

It is an arithmetic number, because the mean of its divisors is an integer number (4853134316250).

Almost surely, 2^{78506653667752} is an apocalyptic number.

It is an amenable number.

78506653667752 is a deficient number, since it is larger than the sum of its proper divisors (76793644452248).

78506653667752 is a wasteful number, since it uses less digits than its factorization.

78506653667752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176517873 (or 1176517869 counting only the distinct ones).

The product of its (nonzero) digits is 2667168000, while the sum is 73.

The spelling of 78506653667752 in words is "seventy-eight trillion, five hundred six billion, six hundred fifty-three million, six hundred sixty-seven thousand, seven hundred fifty-two".