15128204454 has 24 divisors (see below), whose sum is σ = 35757574632. Its totient is φ = 4584304320.

The previous prime is 15128204423. The next prime is 15128204471. The reversal of 15128204454 is 45440282151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38202339 + ... + 38202734.

It is an arithmetic number, because the mean of its divisors is an integer number (1489898943).

Almost surely, 2^15128204454 is an apocalyptic number.

15128204454 is an abundant number, since it is smaller than the sum of its proper divisors (20629370178).

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

15128204454 is a wasteful number, since it uses less digits than its factorization.

15128204454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76405092 (or 76405089 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The spelling of 15128204454 in words is "fifteen billion, one hundred twenty-eight million, two hundred four thousand, four hundred fifty-four".