15432894820 has 24 divisors (see below), whose sum is σ = 37038947904. Its totient is φ = 5291278176.

The previous prime is 15432894809. The next prime is 15432894853. The reversal of 15432894820 is 2849823451.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55117342 + ... + 55117621.

It is an arithmetic number, because the mean of its divisors is an integer number (1543289496).

Almost surely, 2^15432894820 is an apocalyptic number.

15432894820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15432894820 is an abundant number, since it is smaller than the sum of its proper divisors (21606053084).

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

15432894820 is a wasteful number, since it uses less digits than its factorization.

15432894820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110234979 (or 110234977 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 15432894820 in words is "fifteen billion, four hundred thirty-two million, eight hundred ninety-four thousand, eight hundred twenty".