18890155455472 has 80 divisors (see below), whose sum is σ = 41953916999680. Its totient is φ = 8071485076224.

The previous prime is 18890155455469. The next prime is 18890155455547. The reversal of 18890155455472 is 27455455109881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50052178 + ... + 50428174.

It is an arithmetic number, because the mean of its divisors is an integer number (524423962496).

Almost surely, 2^{18890155455472} is an apocalyptic number.

It is an amenable number.

18890155455472 is an abundant number, since it is smaller than the sum of its proper divisors (23063761544208).

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

18890155455472 is a wasteful number, since it uses less digits than its factorization.

18890155455472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377358 (or 377352 counting only the distinct ones).

The product of its (nonzero) digits is 80640000, while the sum is 64.

The spelling of 18890155455472 in words is "eighteen trillion, eight hundred ninety billion, one hundred fifty-five million, four hundred fifty-five thousand, four hundred seventy-two".