220155510352240 has 80 divisors (see below), whose sum is σ = 516938161670496. Its totient is φ = 87188839808000.

The previous prime is 220155510352223. The next prime is 220155510352279. The reversal of 220155510352240 is 42253015551022.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 220155510352240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570020634 + ... + 570406726.

Almost surely, 2^{220155510352240} is an apocalyptic number.

220155510352240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220155510352240 is an abundant number, since it is smaller than the sum of its proper divisors (296782651318256).

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

220155510352240 is a wasteful number, since it uses less digits than its factorization.

220155510352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456778 (or 456772 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 220155510352240 in words is "two hundred twenty trillion, one hundred fifty-five billion, five hundred ten million, three hundred fifty-two thousand, two hundred forty".