220640264046 has 24 divisors (see below), whose sum is σ = 478644856560. Its totient is φ = 73455839136.

The previous prime is 220640264029. The next prime is 220640264081. The reversal of 220640264046 is 640462046022.

220640264046 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 4 + 0 + 2 + 640 + 4 + 6 = 666.

It is a super-2 number, since 2×220640264046² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220640264046.

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, 7561330 + ... + 7590453.

It is an arithmetic number, because the mean of its divisors is an integer number (19943535690).

Almost surely, 2^220640264046 is an apocalyptic number.

220640264046 is an abundant number, since it is smaller than the sum of its proper divisors (258004592514).

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

220640264046 is a wasteful number, since it uses less digits than its factorization.

220640264046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152600 (or 15152597 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 220640264046 in words is "two hundred twenty billion, six hundred forty million, two hundred sixty-four thousand, forty-six".