15513145245 has 64 divisors (see below), whose sum is σ = 29757100800. Its totient is φ = 7622657280.

The previous prime is 15513145187. The next prime is 15513145273. The reversal of 15513145245 is 54254131551.

15513145245 is a `hidden beast` number, since 1 + 551 + 3 + 14 + 52 + 45 = 666.

It is not a de Polignac number, because 15513145245 - 2⁶ = 15513145181 is a prime.

It is a super-2 number, since 2×15513145245² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 941286 + ... + 957624.

It is an arithmetic number, because the mean of its divisors is an integer number (464954700).

Almost surely, 2^15513145245 is an apocalyptic number.

15513145245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15513145245 is a deficient number, since it is larger than the sum of its proper divisors (14243955555).

15513145245 is a wasteful number, since it uses less digits than its factorization.

15513145245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16907 (or 16901 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 15513145245 its reverse (54254131551), we get a palindrome (69767276796).

The spelling of 15513145245 in words is "fifteen billion, five hundred thirteen million, one hundred forty-five thousand, two hundred forty-five".