15663606453231 has 32 divisors (see below), whose sum is σ = 23314443694080. Its totient is φ = 9271860242400.

The previous prime is 15663606453227. The next prime is 15663606453233. The reversal of 15663606453231 is 13235460636651.

It is not a de Polignac number, because 15663606453231 - 2² = 15663606453227 is a prime.

It is a super-2 number, since 2×15663606453231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15663606453233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29133876 + ... + 29666646.

It is an arithmetic number, because the mean of its divisors is an integer number (728576365440).

Almost surely, 2^{15663606453231} is an apocalyptic number.

15663606453231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15663606453231 is a deficient number, since it is larger than the sum of its proper divisors (7650837240849).

15663606453231 is a wasteful number, since it uses less digits than its factorization.

15663606453231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553547.

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 15663606453231 in words is "fifteen trillion, six hundred sixty-three billion, six hundred six million, four hundred fifty-three thousand, two hundred thirty-one".