15513530050 has 24 divisors (see below), whose sum is σ = 28866535236. Its totient is φ = 6202967040.

The previous prime is 15513530027. The next prime is 15513530051. The reversal of 15513530050 is 5003531551.

It can be written as a sum of positive squares in 6 ways, for example, as 4164249961 + 11349280089 = 64531^2 + 106533^2 .

It is a super-2 number, since 2×15513530050² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15513530051) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 69822 + ... + 189478.

Almost surely, 2^15513530050 is an apocalyptic number.

15513530050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15513530050 is a deficient number, since it is larger than the sum of its proper divisors (13353005186).

15513530050 is a wasteful number, since it uses less digits than its factorization.

15513530050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122262 (or 122257 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 28.

The spelling of 15513530050 in words is "fifteen billion, five hundred thirteen million, five hundred thirty thousand, fifty".