16020004455 has 192 divisors, whose sum is σ = 35082657792. Its totient is φ = 6582850560.

The previous prime is 16020004433. The next prime is 16020004513. The reversal of 16020004455 is 55440002061.

16020004455 is a `hidden beast` number, since 1 + 6 + 0 + 200 + 0 + 4 + 455 = 666.

It is not a de Polignac number, because 16020004455 - 2⁶ = 16020004391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 48398640 + ... + 48398970.

It is an arithmetic number, because the mean of its divisors is an integer number (182722176).

Almost surely, 2^16020004455 is an apocalyptic number.

16020004455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16020004455 is an abundant number, since it is smaller than the sum of its proper divisors (19062653337).

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

16020004455 is a wasteful number, since it uses less digits than its factorization.

16020004455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 16020004455 in words is "sixteen billion, twenty million, four thousand, four hundred fifty-five".