220151124255656 has 128 divisors (see below), whose sum is σ = 475602784272000. Its totient is φ = 94638449664000.

The previous prime is 220151124255539. The next prime is 220151124255659. The reversal of 220151124255656 is 656552421151022.

It is a super-2 number, since 2×220151124255656² (a number of 29 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 220151124255656.

It is not an unprimeable number, because it can be changed into a prime (220151124255659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10659056 + ... + 23535456.

It is an arithmetic number, because the mean of its divisors is an integer number (3715646752125).

Almost surely, 2^{220151124255656} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220151124255656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237801392136000).

220151124255656 is an abundant number, since it is smaller than the sum of its proper divisors (255451660016344).

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

220151124255656 is a wasteful number, since it uses less digits than its factorization.

220151124255656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12876603 (or 12876599 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 47.

The spelling of 220151124255656 in words is "two hundred twenty trillion, one hundred fifty-one billion, one hundred twenty-four million, two hundred fifty-five thousand, six hundred fifty-six".