68485735584 has 72 divisors (see below), whose sum is σ = 222578647200. Its totient is φ = 19567352448.

The previous prime is 68485735547. The next prime is 68485735613. The reversal of 68485735584 is 48553758486.

68485735584 is a `hidden beast` number, since 6 + 8 + 4 + 8 + 5 + 73 + 558 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16983534 + ... + 16987565.

It is an arithmetic number, because the mean of its divisors is an integer number (3091370100).

Almost surely, 2^68485735584 is an apocalyptic number.

It is an amenable number.

68485735584 is an abundant number, since it is smaller than the sum of its proper divisors (154092911616).

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

68485735584 is a wasteful number, since it uses less digits than its factorization.

68485735584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33971122 (or 33971111 counting only the distinct ones).

The product of its digits is 129024000, while the sum is 63.

The spelling of 68485735584 in words is "sixty-eight billion, four hundred eighty-five million, seven hundred thirty-five thousand, five hundred eighty-four".