640022461060 has 96 divisors (see below), whose sum is σ = 1387284433920. Its totient is φ = 247934668800.

The previous prime is 640022461031. The next prime is 640022461081. The reversal of 640022461060 is 60164220046.

It is a super-2 number, since 2×640022461060² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 22084980 + ... + 22113940.

It is an arithmetic number, because the mean of its divisors is an integer number (14450879520).

Almost surely, 2^640022461060 is an apocalyptic number.

It is an amenable number.

640022461060 is an abundant number, since it is smaller than the sum of its proper divisors (747261972860).

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

640022461060 is a wasteful number, since it uses less digits than its factorization.

640022461060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29317 (or 29315 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 640022461060 in words is "six hundred forty billion, twenty-two million, four hundred sixty-one thousand, sixty".