15498638945 has 16 divisors (see below), whose sum is σ = 19220984832. Its totient is φ = 11984777280.

The previous prime is 15498638917. The next prime is 15498638957. The reversal of 15498638945 is 54983689451.

It is not a de Polignac number, because 15498638945 - 2¹⁴ = 15498622561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73604 + ... + 190826.

It is an arithmetic number, because the mean of its divisors is an integer number (1201311552).

Almost surely, 2^15498638945 is an apocalyptic number.

It is an amenable number.

15498638945 is a deficient number, since it is larger than the sum of its proper divisors (3722345887).

15498638945 is a wasteful number, since it uses less digits than its factorization.

15498638945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118112.

The product of its digits is 37324800, while the sum is 62.

The spelling of 15498638945 in words is "fifteen billion, four hundred ninety-eight million, six hundred thirty-eight thousand, nine hundred forty-five".