15808650945 has 16 divisors (see below), whose sum is σ = 25309979712. Its totient is φ = 8425901120.

The previous prime is 15808650941. The next prime is 15808650989. The reversal of 15808650945 is 54905680851.

It is not a de Polignac number, because 15808650945 - 2² = 15808650941 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (15808650941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311862 + ... + 358991.

It is an arithmetic number, because the mean of its divisors is an integer number (1581873732).

Almost surely, 2^15808650945 is an apocalyptic number.

15808650945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15808650945 is a deficient number, since it is larger than the sum of its proper divisors (9501328767).

15808650945 is a wasteful number, since it uses less digits than its factorization.

15808650945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672432.

The product of its (nonzero) digits is 1728000, while the sum is 51.

The spelling of 15808650945 in words is "fifteen billion, eight hundred eight million, six hundred fifty thousand, nine hundred forty-five".