220891554838 has 8 divisors (see below), whose sum is σ = 331403787432. Its totient is φ = 110423625696.

The previous prime is 220891554827. The next prime is 220891554853. The reversal of 220891554838 is 838455198022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×220891554838³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11063395 + ... + 11083342.

It is an arithmetic number, because the mean of its divisors is an integer number (41425473429).

Almost surely, 2^220891554838 is an apocalyptic number.

220891554838 is a deficient number, since it is larger than the sum of its proper divisors (110512232594).

220891554838 is a wasteful number, since it uses less digits than its factorization.

220891554838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22151726.

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 220891554838 in words is "two hundred twenty billion, eight hundred ninety-one million, five hundred fifty-four thousand, eight hundred thirty-eight".