68646424511 has 12 divisors (see below), whose sum is σ = 81711076392. Its totient is φ = 57471423408.

The previous prime is 68646424489. The next prime is 68646424573. The reversal of 68646424511 is 11542464686.

It is a de Polignac number, because none of the positive numbers 2^k-68646424511 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 (68646421511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16287980 + ... + 16292193.

It is an arithmetic number, because the mean of its divisors is an integer number (6809256366).

Almost surely, 2^68646424511 is an apocalyptic number.

68646424511 is a deficient number, since it is larger than the sum of its proper divisors (13064651881).

68646424511 is a wasteful number, since it uses less digits than its factorization.

68646424511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32580230 (or 32580223 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The spelling of 68646424511 in words is "sixty-eight billion, six hundred forty-six million, four hundred twenty-four thousand, five hundred eleven".