64553643025123 has 96 divisors (see below), whose sum is σ = 80593997414400. Its totient is φ = 51402676852800.

The previous prime is 64553643025097. The next prime is 64553643025211. The reversal of 64553643025123 is 32152034635546.

64553643025123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64553643025123 - 2¹⁷ = 64553642894051 is a prime.

It is a super-2 number, since 2×64553643025123² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (64553646025123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7195809028 + ... + 7195817998.

It is an arithmetic number, because the mean of its divisors is an integer number (839520806400).

Almost surely, 2^{64553643025123} is an apocalyptic number.

64553643025123 is a deficient number, since it is larger than the sum of its proper divisors (16040354389277).

64553643025123 is a wasteful number, since it uses less digits than its factorization.

64553643025123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9741 (or 9734 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 64553643025123 in words is "sixty-four trillion, five hundred fifty-three billion, six hundred forty-three million, twenty-five thousand, one hundred twenty-three".