15690431427 has 24 divisors (see below), whose sum is σ = 23017001280. Its totient is φ = 9500396400.

The previous prime is 15690431413. The next prime is 15690431437. The reversal of 15690431427 is 72413409651.

It is not a de Polignac number, because 15690431427 - 2¹⁹ = 15689907139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15690431437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376224 + ... + 415842.

It is an arithmetic number, because the mean of its divisors is an integer number (959041720).

Almost surely, 2^15690431427 is an apocalyptic number.

15690431427 is a deficient number, since it is larger than the sum of its proper divisors (7326569853).

15690431427 is a wasteful number, since it uses less digits than its factorization.

15690431427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40735 (or 40724 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 15690431427 in words is "fifteen billion, six hundred ninety million, four hundred thirty-one thousand, four hundred twenty-seven".