64513932967451 has 12 divisors (see below), whose sum is σ = 71336631794736. Its totient is φ = 58297838155920.

The previous prime is 64513932967427. The next prime is 64513932967483. The reversal of 64513932967451 is 15476923931546.

It is a de Polignac number, because none of the positive numbers 2^k-64513932967451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64513932967051) 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, 1596306140 + ... + 1596346553.

It is an arithmetic number, because the mean of its divisors is an integer number (5944719316228).

Almost surely, 2^{64513932967451} is an apocalyptic number.

64513932967451 is a deficient number, since it is larger than the sum of its proper divisors (6822698827285).

64513932967451 is a wasteful number, since it uses less digits than its factorization.

64513932967451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192652882 (or 3192652871 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 65.

The spelling of 64513932967451 in words is "sixty-four trillion, five hundred thirteen billion, nine hundred thirty-two million, nine hundred sixty-seven thousand, four hundred fifty-one".