15799894890 has 64 divisors (see below), whose sum is σ = 41832709632. Its totient is φ = 3794342400.

The previous prime is 15799894889. The next prime is 15799894907. The reversal of 15799894890 is 9849899751.

It is a super-2 number, since 2×15799894890² (a number of 21 digits) contains 22 as substring.

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, 478066 + ... + 510045.

It is an arithmetic number, because the mean of its divisors is an integer number (653636088).

Almost surely, 2^15799894890 is an apocalyptic number.

15799894890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15799894890 is an abundant number, since it is smaller than the sum of its proper divisors (26032814742).

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

15799894890 is a wasteful number, since it uses less digits than its factorization.

15799894890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988175.

The product of its (nonzero) digits is 58786560, while the sum is 69.

The spelling of 15799894890 in words is "fifteen billion, seven hundred ninety-nine million, eight hundred ninety-four thousand, eight hundred ninety".