15690396748609 has 32 divisors (see below), whose sum is σ = 18290321510400. Its totient is φ = 13319754264960.

The previous prime is 15690396748549. The next prime is 15690396748627. The reversal of 15690396748609 is 90684769309651.

It is not a de Polignac number, because 15690396748609 - 2¹¹ = 15690396746561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15690396748309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2631439 + ... + 6189124.

It is an arithmetic number, because the mean of its divisors is an integer number (571572547200).

Almost surely, 2^{15690396748609} is an apocalyptic number.

It is an amenable number.

15690396748609 is a deficient number, since it is larger than the sum of its proper divisors (2599924761791).

15690396748609 is a wasteful number, since it uses less digits than its factorization.

15690396748609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8820765.

The product of its (nonzero) digits is 529079040, while the sum is 73.

The spelling of 15690396748609 in words is "fifteen trillion, six hundred ninety billion, three hundred ninety-six million, seven hundred forty-eight thousand, six hundred nine".