68204568951 has 6 divisors (see below), whose sum is σ = 98517710720. Its totient is φ = 45469712628.

The previous prime is 68204568931. The next prime is 68204568959. The reversal of 68204568951 is 15986540286.

68204568951 is a `hidden beast` number, since 6 + 8 + 20 + 4 + 568 + 9 + 51 = 666.

It is not a de Polignac number, because 68204568951 - 2²⁶ = 68137460087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68204568959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3789142711 + ... + 3789142728.

Almost surely, 2^68204568951 is an apocalyptic number.

68204568951 is a deficient number, since it is larger than the sum of its proper divisors (30313141769).

68204568951 is a wasteful number, since it uses less digits than its factorization.

68204568951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578285445 (or 7578285442 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 68204568951 in words is "sixty-eight billion, two hundred four million, five hundred sixty-eight thousand, nine hundred fifty-one".