68456521290 has 16 divisors (see below), whose sum is σ = 164295651168. Its totient is φ = 18255072336.

The previous prime is 68456521279. The next prime is 68456521307. The reversal of 68456521290 is 9212565486.

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, 1140941992 + ... + 1140942051.

It is an arithmetic number, because the mean of its divisors is an integer number (10268478198).

Almost surely, 2^68456521290 is an apocalyptic number.

68456521290 is an abundant number, since it is smaller than the sum of its proper divisors (95839129878).

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

68456521290 is a wasteful number, since it uses less digits than its factorization.

68456521290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281884053.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 68456521290 in words is "sixty-eight billion, four hundred fifty-six million, five hundred twenty-one thousand, two hundred ninety".