64706536536 has 32 divisors (see below), whose sum is σ = 161775567360. Its totient is φ = 21567615392.

The previous prime is 64706536511. The next prime is 64706536567. The reversal of 64706536536 is 63563560746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417601 + ... + 551183.

It is an arithmetic number, because the mean of its divisors is an integer number (5055486480).

Almost surely, 2^64706536536 is an apocalyptic number.

It is an amenable number.

64706536536 is an abundant number, since it is smaller than the sum of its proper divisors (97069030824).

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

64706536536 is a wasteful number, since it uses less digits than its factorization.

64706536536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153775 (or 153771 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 51.

The spelling of 64706536536 in words is "sixty-four billion, seven hundred six million, five hundred thirty-six thousand, five hundred thirty-six".