15512132351023 has 32 divisors (see below), whose sum is σ = 20230989069312. Its totient is φ = 11533004736000.

The previous prime is 15512132351021. The next prime is 15512132351029. The reversal of 15512132351023 is 32015323121551.

It is not a de Polignac number, because 15512132351023 - 2¹ = 15512132351021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15512132351023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15512132351021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10211236 + ... + 11631577.

It is an arithmetic number, because the mean of its divisors is an integer number (632218408416).

Almost surely, 2^{15512132351023} is an apocalyptic number.

15512132351023 is a deficient number, since it is larger than the sum of its proper divisors (4718856718289).

15512132351023 is a wasteful number, since it uses less digits than its factorization.

15512132351023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21843255.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 15512132351023 its reverse (32015323121551), we get a palindrome (47527455472574).

The spelling of 15512132351023 in words is "fifteen trillion, five hundred twelve billion, one hundred thirty-two million, three hundred fifty-one thousand, twenty-three".