220505107698 has 18 divisors (see below), whose sum is σ = 477765383277. Its totient is φ = 73501038480.

The previous prime is 220505107681. The next prime is 220505107703. The reversal of 220505107698 is 896701505022.

220505107698 is a `hidden beast` number, since 2 + 20 + 50 + 510 + 7 + 69 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 208919383929 + 11585723769 = 457077^2 + 107637^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332043.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1936918 + ... + 2047598.

Almost surely, 2^220505107698 is an apocalyptic number.

220505107698 is an abundant number, since it is smaller than the sum of its proper divisors (257260275579).

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

220505107698 is an frugal number, since it uses more digits than its factorization.

220505107698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221370 (or 110686 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 220505107698 in words is "two hundred twenty billion, five hundred five million, one hundred seven thousand, six hundred ninety-eight".