64623338654 has 48 divisors (see below), whose sum is σ = 120155098032. Its totient is φ = 25900422912.

The previous prime is 64623338629. The next prime is 64623338683. The reversal of 64623338654 is 45683332646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138029 + ... + 385095.

It is an arithmetic number, because the mean of its divisors is an integer number (2503231209).

Almost surely, 2^64623338654 is an apocalyptic number.

64623338654 is a deficient number, since it is larger than the sum of its proper divisors (55531759378).

64623338654 is a wasteful number, since it uses less digits than its factorization.

64623338654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247257 (or 247250 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 50.

The spelling of 64623338654 in words is "sixty-four billion, six hundred twenty-three million, three hundred thirty-eight thousand, six hundred fifty-four".