220959997542 has 96 divisors (see below), whose sum is σ = 497761355520. Its totient is φ = 70792142400.

The previous prime is 220959997529. The next prime is 220959997607. The reversal of 220959997542 is 245799959022.

It is a self number, because there is not a number n which added to its sum of digits gives 220959997542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12496684 + ... + 12514352.

It is an arithmetic number, because the mean of its divisors is an integer number (5185014120).

Almost surely, 2^220959997542 is an apocalyptic number.

220959997542 is an abundant number, since it is smaller than the sum of its proper divisors (276801357978).

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

220959997542 is a wasteful number, since it uses less digits than its factorization.

220959997542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17978 (or 17975 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 220959997542 in words is "two hundred twenty billion, nine hundred fifty-nine million, nine hundred ninety-seven thousand, five hundred forty-two".