220220238864 has 40 divisors (see below), whose sum is σ = 569781656640. Its totient is φ = 73293278848.

The previous prime is 220220238857. The next prime is 220220238871. The reversal of 220220238864 is 468832022022.

It is an interprime number because it is at equal distance from previous prime (220220238857) and next prime (220220238871).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3514479 + ... + 3576590.

It is an arithmetic number, because the mean of its divisors is an integer number (14244541416).

Almost surely, 2^220220238864 is an apocalyptic number.

220220238864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220220238864 is an abundant number, since it is smaller than the sum of its proper divisors (349561417776).

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

220220238864 is a wasteful number, since it uses less digits than its factorization.

220220238864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091727 (or 7091721 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The spelling of 220220238864 in words is "two hundred twenty billion, two hundred twenty million, two hundred thirty-eight thousand, eight hundred sixty-four".