15681044090 has 32 divisors (see below), whose sum is σ = 30436136640. Its totient is φ = 5797353600.

The previous prime is 15681044089. The next prime is 15681044101. The reversal of 15681044090 is 9044018651.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 998696 + ... + 1014275.

It is an arithmetic number, because the mean of its divisors is an integer number (951129270).

Almost surely, 2^15681044090 is an apocalyptic number.

15681044090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15681044090 is a deficient number, since it is larger than the sum of its proper divisors (14755092550).

15681044090 is a wasteful number, since it uses less digits than its factorization.

15681044090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013038.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 15681044090 in words is "fifteen billion, six hundred eighty-one million, forty-four thousand, ninety".