15445355620 has 48 divisors (see below), whose sum is σ = 33020846208. Its totient is φ = 6067281920.

The previous prime is 15445355609. The next prime is 15445355663. The reversal of 15445355620 is 2655354451.

15445355620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343779 + ... + 386101.

It is an arithmetic number, because the mean of its divisors is an integer number (687934296).

Almost surely, 2^15445355620 is an apocalyptic number.

15445355620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15445355620 is an abundant number, since it is smaller than the sum of its proper divisors (17575490588).

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

15445355620 is a wasteful number, since it uses less digits than its factorization.

15445355620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42660 (or 42658 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 15445355620 in words is "fifteen billion, four hundred forty-five million, three hundred fifty-five thousand, six hundred twenty".