64556451653331 has 16 divisors (see below), whose sum is σ = 97982914763520. Its totient is φ = 37424029943520.

The previous prime is 64556451653303. The next prime is 64556451653339. The reversal of 64556451653331 is 13335615465546.

It is not a de Polignac number, because 64556451653331 - 2¹⁰ = 64556451652307 is a prime.

It is a super-2 number, since 2×64556451653331² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64556451653339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42527305996 + ... + 42527307513.

It is an arithmetic number, because the mean of its divisors is an integer number (6123932172720).

Almost surely, 2^{64556451653331} is an apocalyptic number.

64556451653331 is a deficient number, since it is larger than the sum of its proper divisors (33426463110189).

64556451653331 is a wasteful number, since it uses less digits than its factorization.

64556451653331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85054613546.

The product of its digits is 58320000, while the sum is 57.

The spelling of 64556451653331 in words is "sixty-four trillion, five hundred fifty-six billion, four hundred fifty-one million, six hundred fifty-three thousand, three hundred thirty-one".