15691691090 has 16 divisors (see below), whose sum is σ = 28246760640. Its totient is φ = 6276294960.

The previous prime is 15691691039. The next prime is 15691691117. The reversal of 15691691090 is 9019619651.

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, 174275 + ... + 248505.

It is an arithmetic number, because the mean of its divisors is an integer number (1765422540).

Almost surely, 2^15691691090 is an apocalyptic number.

15691691090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15691691090 is a deficient number, since it is larger than the sum of its proper divisors (12555069550).

15691691090 is a wasteful number, since it uses less digits than its factorization.

15691691090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95377.

The product of its (nonzero) digits is 131220, while the sum is 47.

The spelling of 15691691090 in words is "fifteen billion, six hundred ninety-one million, six hundred ninety-one thousand, ninety".