64012542602 has 4 divisors (see below), whose sum is σ = 96018813906. Its totient is φ = 32006271300.

The previous prime is 64012542593. The next prime is 64012542623. The reversal of 64012542602 is 20624521046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61062857881 + 2949684721 = 247109^2 + 54311^2 .

It is a super-2 number, since 2×64012542602² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16003135649 + ... + 16003135652.

Almost surely, 2^64012542602 is an apocalyptic number.

64012542602 is a deficient number, since it is larger than the sum of its proper divisors (32006271304).

64012542602 is a wasteful number, since it uses less digits than its factorization.

64012542602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32006271303.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 64012542602 in words is "sixty-four billion, twelve million, five hundred forty-two thousand, six hundred two".