15535998050 has 48 divisors (see below), whose sum is σ = 29602426752. Its totient is φ = 6063499200.

The previous prime is 15535998041. The next prime is 15535998053. The reversal of 15535998050 is 5089953551.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15535998050.

It is not an unprimeable number, because it can be changed into a prime (15535998053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767864 + ... + 787836.

It is an arithmetic number, because the mean of its divisors is an integer number (616717224).

Almost surely, 2^15535998050 is an apocalyptic number.

15535998050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15535998050 is a deficient number, since it is larger than the sum of its proper divisors (14066428702).

15535998050 is a wasteful number, since it uses less digits than its factorization.

15535998050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20363 (or 20358 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 50.

The spelling of 15535998050 in words is "fifteen billion, five hundred thirty-five million, nine hundred ninety-eight thousand, fifty".