68694478352 has 40 divisors (see below), whose sum is σ = 134175619800. Its totient is φ = 34069635072.

The previous prime is 68694478331. The next prime is 68694478357. The reversal of 68694478352 is 25387449686.

68694478352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 33891337216 + 34803141136 = 184096^2 + 186556^2 .

It is not an unprimeable number, because it can be changed into a prime (68694478357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950768 + ... + 1020464.

It is an arithmetic number, because the mean of its divisors is an integer number (3354390495).

Almost surely, 2^68694478352 is an apocalyptic number.

It is an amenable number.

68694478352 is a deficient number, since it is larger than the sum of its proper divisors (65481141448).

68694478352 is a wasteful number, since it uses less digits than its factorization.

68694478352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70203 (or 70197 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 62.

The spelling of 68694478352 in words is "sixty-eight billion, six hundred ninety-four million, four hundred seventy-eight thousand, three hundred fifty-two".