21512403415196 has 24 divisors (see below), whose sum is σ = 38228364506640. Its totient is φ = 10590179668992.

The previous prime is 21512403415157. The next prime is 21512403415199. The reversal of 21512403415196 is 69151430421512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21512403415199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20245061 + ... + 21281148.

It is an arithmetic number, because the mean of its divisors is an integer number (1592848521110).

Almost surely, 2^{21512403415196} is an apocalyptic number.

It is an amenable number.

21512403415196 is a deficient number, since it is larger than the sum of its proper divisors (16715961091444).

21512403415196 is a wasteful number, since it uses less digits than its factorization.

21512403415196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41528213 (or 41528211 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 21512403415196 in words is "twenty-one trillion, five hundred twelve billion, four hundred three million, four hundred fifteen thousand, one hundred ninety-six".