68856947946 has 24 divisors (see below), whose sum is σ = 150584357664. Its totient is φ = 22737807720.

The previous prime is 68856947933. The next prime is 68856947959. The reversal of 68856947946 is 64974965886.

68856947946 is a `hidden beast` number, since 68 + 8 + 56 + 9 + 479 + 46 = 666.

It is an interprime number because it is at equal distance from previous prime (68856947933) and next prime (68856947959).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17873710 + ... + 17877561.

It is an arithmetic number, because the mean of its divisors is an integer number (6274348236).

Almost surely, 2^68856947946 is an apocalyptic number.

68856947946 is an abundant number, since it is smaller than the sum of its proper divisors (81727409718).

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

68856947946 is a wasteful number, since it uses less digits than its factorization.

68856947946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35751386 (or 35751383 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 68856947946 in words is "sixty-eight billion, eight hundred fifty-six million, nine hundred forty-seven thousand, nine hundred forty-six".