64712358836 has 6 divisors (see below), whose sum is σ = 113246627970. Its totient is φ = 32356179416.

The previous prime is 64712358833. The next prime is 64712358839. The reversal of 64712358836 is 63885321746.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64712358833) and next prime (64712358839).

It can be written as a sum of positive squares in only one way, i.e., 62322126736 + 2390232100 = 249644^2 + 48890^2 .

It is a super-2 number, since 2×64712358836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64712358833) by changing a digit.

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 as a sum of consecutive naturals, namely, 8089044851 + ... + 8089044858.

It is an arithmetic number, because the mean of its divisors is an integer number (18874437995).

Almost surely, 2^64712358836 is an apocalyptic number.

It is an amenable number.

64712358836 is a deficient number, since it is larger than the sum of its proper divisors (48534269134).

64712358836 is a wasteful number, since it uses less digits than its factorization.

64712358836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16178089713 (or 16178089711 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The spelling of 64712358836 in words is "sixty-four billion, seven hundred twelve million, three hundred fifty-eight thousand, eight hundred thirty-six".