15535997873 has 16 divisors (see below), whose sum is σ = 17074962432. Its totient is φ = 14018466000.

The previous prime is 15535997863. The next prime is 15535997929. The reversal of 15535997873 is 37879953551.

It is not a de Polignac number, because 15535997873 - 2²² = 15531803569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15535997863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964778 + ... + 980748.

It is an arithmetic number, because the mean of its divisors is an integer number (1067185152).

Almost surely, 2^15535997873 is an apocalyptic number.

It is an amenable number.

15535997873 is a deficient number, since it is larger than the sum of its proper divisors (1538964559).

15535997873 is a wasteful number, since it uses less digits than its factorization.

15535997873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16636.

The product of its digits is 35721000, while the sum is 62.

The spelling of 15535997873 in words is "fifteen billion, five hundred thirty-five million, nine hundred ninety-seven thousand, eight hundred seventy-three".