15859120465 has 32 divisors (see below), whose sum is σ = 19919623680. Its totient is φ = 12109219584.

The previous prime is 15859120391. The next prime is 15859120481. The reversal of 15859120465 is 56402195851.

It is a cyclic number.

It is not a de Polignac number, because 15859120465 - 2²³ = 15850731857 is a prime.

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, 12418407 + ... + 12419683.

It is an arithmetic number, because the mean of its divisors is an integer number (622488240).

Almost surely, 2^15859120465 is an apocalyptic number.

It is an amenable number.

15859120465 is a deficient number, since it is larger than the sum of its proper divisors (4060503215).

15859120465 is a wasteful number, since it uses less digits than its factorization.

15859120465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601.

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 15859120465 in words is "fifteen billion, eight hundred fifty-nine million, one hundred twenty thousand, four hundred sixty-five".