136421124631 has 12 divisors (see below), whose sum is σ = 149997908592. Its totient is φ = 123979988000.

The previous prime is 136421124613. The next prime is 136421124647.

136421124631 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 136421124631 - 2¹¹ = 136421122583 is a prime.

It is a super-2 number, since 2×136421124631² (a number of 23 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 (136421124601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209451 + ... + 562771.

It is an arithmetic number, because the mean of its divisors is an integer number (12499825716).

Almost surely, 2^136421124631 is an apocalyptic number.

136421124631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136421124631 is a deficient number, since it is larger than the sum of its proper divisors (13576783961).

136421124631 is a wasteful number, since it uses less digits than its factorization.

136421124631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356534 (or 356523 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The spelling of 136421124631 in words is "one hundred thirty-six billion, four hundred twenty-one million, one hundred twenty-four thousand, six hundred thirty-one".