16623421733888 has 44 divisors (see below), whose sum is σ = 33253899623112. Its totient is φ = 8305885532160.

The previous prime is 16623421733861. The next prime is 16623421733953. The reversal of 16623421733888 is 88833712432661.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16623421733888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226843 + ... + 7149338.

Almost surely, 2^{16623421733888} is an apocalyptic number.

It is an amenable number.

16623421733888 is an abundant number, since it is smaller than the sum of its proper divisors (16630477889224).

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

16623421733888 is a wasteful number, since it uses less digits than its factorization.

16623421733888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11377628 (or 11377610 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 62.

The spelling of 16623421733888 in words is "sixteen trillion, six hundred twenty-three billion, four hundred twenty-one million, seven hundred thirty-three thousand, eight hundred eighty-eight".