64136050552 has 64 divisors (see below), whose sum is σ = 153177696000. Its totient is φ = 24508417536.

The previous prime is 64136050543. The next prime is 64136050633. The reversal of 64136050552 is 25505063146.

It is a super-2 number, since 2×64136050552² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754802 + ... + 1790977.

It is an arithmetic number, because the mean of its divisors is an integer number (2393401500).

Almost surely, 2^64136050552 is an apocalyptic number.

It is an amenable number.

64136050552 is an abundant number, since it is smaller than the sum of its proper divisors (89041645448).

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

64136050552 is a wasteful number, since it uses less digits than its factorization.

64136050552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545828 (or 3545824 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 64136050552 in words is "sixty-four billion, one hundred thirty-six million, fifty thousand, five hundred fifty-two".