664550527155031 has 64 divisors (see below), whose sum is σ = 759243155328000. Its totient is φ = 576112033566720.

The previous prime is 664550527155017. The next prime is 664550527155061. The reversal of 664550527155031 is 130551725055466.

It is a cyclic number.

It is not a de Polignac number, because 664550527155031 - 2²³ = 664550518766423 is a prime.

It is a super-2 number, since 2×664550527155031² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664550527155061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55718156790 + ... + 55718168716.

It is an arithmetic number, because the mean of its divisors is an integer number (11863174302000).

Almost surely, 2^{664550527155031} is an apocalyptic number.

664550527155031 is a deficient number, since it is larger than the sum of its proper divisors (94692628172969).

664550527155031 is a wasteful number, since it uses less digits than its factorization.

664550527155031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15592.

The product of its (nonzero) digits is 18900000, while the sum is 55.

The spelling of 664550527155031 in words is "six hundred sixty-four trillion, five hundred fifty billion, five hundred twenty-seven million, one hundred fifty-five thousand, thirty-one".