162631005601421 has 4 divisors (see below), whose sum is σ = 185864006401632. Its totient is φ = 139398004801212.

The previous prime is 162631005601409. The next prime is 162631005601439. The reversal of 162631005601421 is 124106500136261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 162631005601421 - 2²⁶ = 162630938492557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162631005601021) 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, 11616500400095 + ... + 11616500400108.

It is an arithmetic number, because the mean of its divisors is an integer number (46466001600408).

Almost surely, 2^{162631005601421} is an apocalyptic number.

It is an amenable number.

162631005601421 is a deficient number, since it is larger than the sum of its proper divisors (23233000800211).

162631005601421 is an equidigital number, since it uses as much as digits as its factorization.

162631005601421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23233000800210.

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 162631005601421 its reverse (124106500136261), we get a palindrome (286737505737682).

The spelling of 162631005601421 in words is "one hundred sixty-two trillion, six hundred thirty-one billion, five million, six hundred one thousand, four hundred twenty-one".