21462405341631 has 4 divisors (see below), whose sum is σ = 28616540455512. Its totient is φ = 14308270227752.

The previous prime is 21462405341579. The next prime is 21462405341633. The reversal of 21462405341631 is 13614350426412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21462405341631 - 2²⁷ = 21462271123903 is a prime.

It is a super-2 number, since 2×21462405341631² (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 (21462405341633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3577067556936 + ... + 3577067556941.

It is an arithmetic number, because the mean of its divisors is an integer number (7154135113878).

Almost surely, 2^{21462405341631} is an apocalyptic number.

21462405341631 is a deficient number, since it is larger than the sum of its proper divisors (7154135113881).

21462405341631 is an equidigital number, since it uses as much as digits as its factorization.

21462405341631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154135113880.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 21462405341631 in words is "twenty-one trillion, four hundred sixty-two billion, four hundred five million, three hundred forty-one thousand, six hundred thirty-one".