16620400284 has 48 divisors (see below), whose sum is σ = 38907310848. Its totient is φ = 5522110848.

The previous prime is 16620400253. The next prime is 16620400331. The reversal of 16620400284 is 48200402661.

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, 8338392 + ... + 8340384.

It is an arithmetic number, because the mean of its divisors is an integer number (810568976).

Almost surely, 2^16620400284 is an apocalyptic number.

It is an amenable number.

16620400284 is an abundant number, since it is smaller than the sum of its proper divisors (22286910564).

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

16620400284 is a wasteful number, since it uses less digits than its factorization.

16620400284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3912 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 16620400284 in words is "sixteen billion, six hundred twenty million, four hundred thousand, two hundred eighty-four".