16390903256476 has 72 divisors (see below), whose sum is σ = 33634864494000. Its totient is φ = 6968444313600.

The previous prime is 16390903256407. The next prime is 16390903256477. The reversal of 16390903256476 is 67465230909361.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16390903256477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22092951 + ... + 22822801.

It is an arithmetic number, because the mean of its divisors is an integer number (467150895750).

Almost surely, 2^{16390903256476} 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 16390903256476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16817432247000).

16390903256476 is an abundant number, since it is smaller than the sum of its proper divisors (17243961237524).

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

16390903256476 is a wasteful number, since it uses less digits than its factorization.

16390903256476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730787 (or 730778 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 61.

The spelling of 16390903256476 in words is "sixteen trillion, three hundred ninety billion, nine hundred three million, two hundred fifty-six thousand, four hundred seventy-six".