15213132045 has 40 divisors (see below), whose sum is σ = 28150679040. Its totient is φ = 7851932640.

The previous prime is 15213132043. The next prime is 15213132073. The reversal of 15213132045 is 54023131251.

15213132045 is a `hidden beast` number, since 1 + 521 + 3 + 132 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 15213132045 - 2¹ = 15213132043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15213132043) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 593305 + ... + 618414.

It is an arithmetic number, because the mean of its divisors is an integer number (703766976).

Almost surely, 2^15213132045 is an apocalyptic number.

15213132045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15213132045 is a deficient number, since it is larger than the sum of its proper divisors (12937546995).

15213132045 is a wasteful number, since it uses less digits than its factorization.

15213132045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211767 (or 1211758 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 15213132045 its reverse (54023131251), we get a palindrome (69236263296).

The spelling of 15213132045 in words is "fifteen billion, two hundred thirteen million, one hundred thirty-two thousand, forty-five".