16623105555630 has 64 divisors (see below), whose sum is σ = 47577186597888. Its totient is φ = 3634368418560.

The previous prime is 16623105555541. The next prime is 16623105555647. The reversal of 16623105555630 is 3655550132661.

It is a self number, because there is not a number n which added to its sum of digits gives 16623105555630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1720813551 + ... + 1720823210.

It is an arithmetic number, because the mean of its divisors is an integer number (743393540592).

Almost surely, 2^{16623105555630} is an apocalyptic number.

16623105555630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16623105555630 is an abundant number, since it is smaller than the sum of its proper divisors (30954081042258).

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

16623105555630 is a wasteful number, since it uses less digits than its factorization.

16623105555630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441636801.

The product of its (nonzero) digits is 2430000, while the sum is 48.

The spelling of 16623105555630 in words is "sixteen trillion, six hundred twenty-three billion, one hundred five million, five hundred fifty-five thousand, six hundred thirty".