64129863532 has 24 divisors (see below), whose sum is σ = 128375442720. Its totient is φ = 27459431040.

The previous prime is 64129863527. The next prime is 64129863541. The reversal of 64129863532 is 23536892146.

It is a super-2 number, since 2×64129863532² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001569 + ... + 1063672.

It is an arithmetic number, because the mean of its divisors is an integer number (5348976780).

Almost surely, 2^64129863532 is an apocalyptic number.

It is an amenable number.

64129863532 is an abundant number, since it is smaller than the sum of its proper divisors (64245579188).

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

64129863532 is a wasteful number, since it uses less digits than its factorization.

64129863532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066361 (or 2066359 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The spelling of 64129863532 in words is "sixty-four billion, one hundred twenty-nine million, eight hundred sixty-three thousand, five hundred thirty-two".