220400806902 has 32 divisors (see below), whose sum is σ = 448064414304. Its totient is φ = 72256665600.

The previous prime is 220400806889. The next prime is 220400806903. The reversal of 220400806902 is 209608004022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220400806903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8617878 + ... + 8643414.

It is an arithmetic number, because the mean of its divisors is an integer number (14002012947).

Almost surely, 2^220400806902 is an apocalyptic number.

220400806902 is an abundant number, since it is smaller than the sum of its proper divisors (227663607402).

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

220400806902 is a wasteful number, since it uses less digits than its factorization.

220400806902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49184.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 220400806902 in words is "two hundred twenty billion, four hundred million, eight hundred six thousand, nine hundred two".