64425415635 has 64 divisors (see below), whose sum is σ = 130941619200. Its totient is φ = 29441373696.

The previous prime is 64425415633. The next prime is 64425415657. The reversal of 64425415635 is 53651452446.

64425415635 is a `hidden beast` number, since 6 + 4 + 4 + 2 + 5 + 4 + 1 + 5 + 635 = 666.

It is not a de Polignac number, because 64425415635 - 2¹ = 64425415633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64425415633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3152731 + ... + 3173099.

It is an arithmetic number, because the mean of its divisors is an integer number (2045962800).

Almost surely, 2^64425415635 is an apocalyptic number.

64425415635 is an abundant number, since it is smaller than the sum of its proper divisors (66516203565).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64425415635 is a wasteful number, since it uses less digits than its factorization.

64425415635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23737 (or 23731 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 45.

The spelling of 64425415635 in words is "sixty-four billion, four hundred twenty-five million, four hundred fifteen thousand, six hundred thirty-five".