140064400566 has 24 divisors (see below), whose sum is σ = 305509604400. Its totient is φ = 46374789456.

The previous prime is 140064400559. The next prime is 140064400607. The reversal of 140064400566 is 665004460041.

140064400566 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 644 + 0 + 0 + 5 + 6 + 6 = 666.

It is a super-2 number, since 2×140064400566² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140064400566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26109250 + ... + 26114613.

It is an arithmetic number, because the mean of its divisors is an integer number (12729566850).

Almost surely, 2^140064400566 is an apocalyptic number.

140064400566 is an abundant number, since it is smaller than the sum of its proper divisors (165445203834).

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

140064400566 is a wasteful number, since it uses less digits than its factorization.

140064400566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52224020 (or 52224017 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 140064400566 in words is "one hundred forty billion, sixty-four million, four hundred thousand, five hundred sixty-six".