64055552660 has 48 divisors (see below), whose sum is σ = 146794600512. Its totient is φ = 23285126400.

The previous prime is 64055552657. The next prime is 64055552677. The reversal of 64055552660 is 6625555046.

It is a super-2 number, since 2×64055552660² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 631040 + ... + 725480.

It is an arithmetic number, because the mean of its divisors is an integer number (3058220844).

Almost surely, 2^64055552660 is an apocalyptic number.

It is an amenable number.

64055552660 is an abundant number, since it is smaller than the sum of its proper divisors (82739047852).

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

64055552660 is a wasteful number, since it uses less digits than its factorization.

64055552660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97544 (or 97542 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 64055552660 in words is "sixty-four billion, fifty-five million, five hundred fifty-two thousand, six hundred sixty".