64877625435 has 128 divisors (see below), whose sum is σ = 128212992000. Its totient is φ = 27356838912.

The previous prime is 64877625401. The next prime is 64877625451. The reversal of 64877625435 is 53452677846.

It is a happy number.

It is not a de Polignac number, because 64877625435 - 2¹⁰ = 64877624411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11502346 + ... + 11507984.

It is an arithmetic number, because the mean of its divisors is an integer number (1001664000).

Almost surely, 2^64877625435 is an apocalyptic number.

64877625435 is a deficient number, since it is larger than the sum of its proper divisors (63335366565).

64877625435 is a wasteful number, since it uses less digits than its factorization.

64877625435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its digits is 33868800, while the sum is 57.

The spelling of 64877625435 in words is "sixty-four billion, eight hundred seventy-seven million, six hundred twenty-five thousand, four hundred thirty-five".