220587815940 has 24 divisors (see below), whose sum is σ = 617645884800. Its totient is φ = 58823417568.

The previous prime is 220587815933. The next prime is 220587815971. The reversal of 220587815940 is 49518785022.

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 7 ways as a sum of consecutive naturals, for example, 1838231740 + ... + 1838231859.

It is an arithmetic number, because the mean of its divisors is an integer number (25735245200).

Almost surely, 2^220587815940 is an apocalyptic number.

220587815940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220587815940 is an abundant number, since it is smaller than the sum of its proper divisors (397058068860).

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

220587815940 is a wasteful number, since it uses less digits than its factorization.

220587815940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676463611 (or 3676463609 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 220587815940 in words is "two hundred twenty billion, five hundred eighty-seven million, eight hundred fifteen thousand, nine hundred forty".