21160324652404 has 24 divisors (see below), whose sum is σ = 42320753012160. Its totient is φ = 9068688342336.

The previous prime is 21160324652317. The next prime is 21160324652417. The reversal of 21160324652404 is 40425642306112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16376307 + ... + 17621125.

It is an arithmetic number, because the mean of its divisors is an integer number (1763364708840).

Almost surely, 2^{21160324652404} is an apocalyptic number.

It is an amenable number.

21160324652404 is an abundant number, since it is smaller than the sum of its proper divisors (21160428359756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21160324652404 is a wasteful number, since it uses less digits than its factorization.

21160324652404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851927 (or 1851925 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

Adding to 21160324652404 its reverse (40425642306112), we get a palindrome (61585966958516).

The spelling of 21160324652404 in words is "twenty-one trillion, one hundred sixty billion, three hundred twenty-four million, six hundred fifty-two thousand, four hundred four".