220163625642555 has 144 divisors (see below), whose sum is σ = 467316114969600. Its totient is φ = 95342926815360.

The previous prime is 220163625642509. The next prime is 220163625642619. The reversal of 220163625642555 is 555246526361022.

220163625642555 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 6 + 3 + 6 + 2 + 564 + 25 + 55 = 666.

It is not a de Polignac number, because 220163625642555 - 2¹¹ = 220163625640507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 684361590 + ... + 684683220.

It is an arithmetic number, because the mean of its divisors is an integer number (3245250798400).

Almost surely, 2^{220163625642555} is an apocalyptic number.

220163625642555 is an abundant number, since it is smaller than the sum of its proper divisors (247152489327045).

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

220163625642555 is a wasteful number, since it uses less digits than its factorization.

220163625642555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338014 (or 338004 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 54.

The spelling of 220163625642555 in words is "two hundred twenty trillion, one hundred sixty-three billion, six hundred twenty-five million, six hundred forty-two thousand, five hundred fifty-five".