15443630020 has 48 divisors (see below), whose sum is σ = 39915848448. Its totient is φ = 4887653760.

The previous prime is 15443630009. The next prime is 15443630039. The reversal of 15443630020 is 2003634451.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 4240936 + ... + 4244575.

It is an arithmetic number, because the mean of its divisors is an integer number (831580176).

Almost surely, 2^15443630020 is an apocalyptic number.

15443630020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15443630020 is an abundant number, since it is smaller than the sum of its proper divisors (24472218428).

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

15443630020 is a wasteful number, since it uses less digits than its factorization.

15443630020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8485540 (or 8485538 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 15443630020 in words is "fifteen billion, four hundred forty-three million, six hundred thirty thousand, twenty".