68538445770 has 64 divisors (see below), whose sum is σ = 165627006336. Its totient is φ = 18150961920.

The previous prime is 68538445757. The next prime is 68538445783. The reversal of 68538445770 is 7754483586.

It is an interprime number because it is at equal distance from previous prime (68538445757) and next prime (68538445783).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 68538445770.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16751425 + ... + 16755515.

It is an arithmetic number, because the mean of its divisors is an integer number (2587921974).

Almost surely, 2^68538445770 is an apocalyptic number.

68538445770 is an abundant number, since it is smaller than the sum of its proper divisors (97088560566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68538445770 is a wasteful number, since it uses less digits than its factorization.

68538445770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7815.

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 68538445770 in words is "sixty-eight billion, five hundred thirty-eight million, four hundred forty-five thousand, seven hundred seventy".