21160324652523 has 32 divisors (see below), whose sum is σ = 32483545274880. Its totient is φ = 12001937633280.

The previous prime is 21160324652507. The next prime is 21160324652549. The reversal of 21160324652523 is 32525642306112.

It is not a de Polignac number, because 21160324652523 - 2⁴ = 21160324652507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21160324652563) 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, 12271161 + ... + 13888917.

It is an arithmetic number, because the mean of its divisors is an integer number (1015110789840).

Almost surely, 2^{21160324652523} is an apocalyptic number.

21160324652523 is a deficient number, since it is larger than the sum of its proper divisors (11323220622357).

21160324652523 is a wasteful number, since it uses less digits than its factorization.

21160324652523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622387.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 21160324652523 its reverse (32525642306112), we get a palindrome (53685966958635).

The spelling of 21160324652523 in words is "twenty-one trillion, one hundred sixty billion, three hundred twenty-four million, six hundred fifty-two thousand, five hundred twenty-three".