220865487234 has 16 divisors (see below), whose sum is σ = 504835399488. Its totient is φ = 63104424912.

The previous prime is 220865487229. The next prime is 220865487277. The reversal of 220865487234 is 432784568022.

It is a happy number.

220865487234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220865487234² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2629350997 + ... + 2629351080.

It is an arithmetic number, because the mean of its divisors is an integer number (31552212468).

Almost surely, 2^220865487234 is an apocalyptic number.

220865487234 is an abundant number, since it is smaller than the sum of its proper divisors (283969912254).

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

220865487234 is a wasteful number, since it uses less digits than its factorization.

220865487234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258702089.

The product of its (nonzero) digits is 5160960, while the sum is 51.

The spelling of 220865487234 in words is "two hundred twenty billion, eight hundred sixty-five million, four hundred eighty-seven thousand, two hundred thirty-four".