64120456034531 has 16 divisors (see below), whose sum is σ = 73203137943264. Its totient is φ = 55639099697664.

The previous prime is 64120456034513. The next prime is 64120456034561. The reversal of 64120456034531 is 13543065402146.

It is a cyclic number.

It is not a de Polignac number, because 64120456034531 - 2³⁸ = 63845578127587 is a prime.

It is a super-2 number, since 2×64120456034531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64120456034561) 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, 175233080 + ... + 175598613.

It is an arithmetic number, because the mean of its divisors is an integer number (4575196121454).

Almost surely, 2^{64120456034531} is an apocalyptic number.

64120456034531 is a deficient number, since it is larger than the sum of its proper divisors (9082681908733).

64120456034531 is a wasteful number, since it uses less digits than its factorization.

64120456034531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350832550.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 64120456034531 in words is "sixty-four trillion, one hundred twenty billion, four hundred fifty-six million, thirty-four thousand, five hundred thirty-one".