15150312500 has 48 divisors (see below), whose sum is σ = 33141907344. Its totient is φ = 6060000000.

The previous prime is 15150312491. The next prime is 15150312503. The reversal of 15150312500 is 521305151.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14834752804 + 315559696 = 121798^2 + 17764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15150312503) 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, 288260 + ... + 336740.

It is an arithmetic number, because the mean of its divisors is an integer number (690456403).

Almost surely, 2^15150312500 is an apocalyptic number.

15150312500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15150312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16570953672).

15150312500 is an abundant number, since it is smaller than the sum of its proper divisors (17991594844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15150312500 is an frugal number, since it uses more digits than its factorization.

15150312500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48520 (or 48488 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 15150312500 its reverse (521305151), we get a palindrome (15671617651).

The spelling of 15150312500 in words is "fifteen billion, one hundred fifty million, three hundred twelve thousand, five hundred".