220734840885 has 64 divisors (see below), whose sum is σ = 420225781248. Its totient is φ = 97830273024.

The previous prime is 220734840877. The next prime is 220734840901. The reversal of 220734840885 is 588048437022.

It is not a de Polignac number, because 220734840885 - 2³ = 220734840877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1371292 + ... + 1523781.

It is an arithmetic number, because the mean of its divisors is an integer number (6566027832).

Almost surely, 2^220734840885 is an apocalyptic number.

It is an amenable number.

220734840885 is a deficient number, since it is larger than the sum of its proper divisors (199490940363).

220734840885 is a wasteful number, since it uses less digits than its factorization.

220734840885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895134.

The product of its (nonzero) digits is 3440640, while the sum is 51.

The spelling of 220734840885 in words is "two hundred twenty billion, seven hundred thirty-four million, eight hundred forty thousand, eight hundred eighty-five".