2215557100544 has 44 divisors (see below), whose sum is σ = 4431689496000. Its totient is φ = 1107093485568.

The previous prime is 2215557100489. The next prime is 2215557100553. The reversal of 2215557100544 is 4450017555122.

It is a super-2 number, since 2×2215557100544² (a number of 25 digits) contains 22 as substring.

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, 989657 + ... + 2326055.

Almost surely, 2^{2215557100544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2215557100544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2215844748000).

2215557100544 is an abundant number, since it is smaller than the sum of its proper divisors (2216132395456).

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

2215557100544 is a wasteful number, since it uses less digits than its factorization.

2215557100544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338038 (or 1338020 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 2215557100544 in words is "two trillion, two hundred fifteen billion, five hundred fifty-seven million, one hundred thousand, five hundred forty-four".