15042391917 has 16 divisors (see below), whose sum is σ = 22936760832. Its totient is φ = 8590019760.

The previous prime is 15042391909. The next prime is 15042391951. The reversal of 15042391917 is 71919324051.

15042391917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15042391917 - 2³ = 15042391909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042391957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201783 + ... + 266084.

It is an arithmetic number, because the mean of its divisors is an integer number (1433547552).

Almost surely, 2^15042391917 is an apocalyptic number.

It is an amenable number.

15042391917 is a deficient number, since it is larger than the sum of its proper divisors (7894368915).

15042391917 is a wasteful number, since it uses less digits than its factorization.

15042391917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469408.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 15042391917 in words is "fifteen billion, forty-two million, three hundred ninety-one thousand, nine hundred seventeen".