21412520734631 has 8 divisors (see below), whose sum is σ = 23063869693200. Its totient is φ = 19761776344512.

The previous prime is 21412520734601. The next prime is 21412520734663. The reversal of 21412520734631 is 13643702521412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21412520734631 - 2³⁰ = 21411446992807 is a prime.

It is a super-2 number, since 2×21412520734631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412520734601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151068545 + ... + 151210218.

It is an arithmetic number, because the mean of its divisors is an integer number (2882983711650).

Almost surely, 2^{21412520734631} is an apocalyptic number.

21412520734631 is a deficient number, since it is larger than the sum of its proper divisors (1651348958569).

21412520734631 is a wasteful number, since it uses less digits than its factorization.

21412520734631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302284225.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 21412520734631 in words is "twenty-one trillion, four hundred twelve billion, five hundred twenty million, seven hundred thirty-four thousand, six hundred thirty-one".