136634436631 has 32 divisors (see below), whose sum is σ = 176922869760. Its totient is φ = 102436792800.

The previous prime is 136634436577. The next prime is 136634436661.

136634436631 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 136634436631 - 2¹⁵ = 136634403863 is a prime.

It is a super-2 number, since 2×136634436631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136634436661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106435 + ... + 533476.

It is an arithmetic number, because the mean of its divisors is an integer number (5528839680).

Almost surely, 2^136634436631 is an apocalyptic number.

136634436631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136634436631 is a deficient number, since it is larger than the sum of its proper divisors (40288433129).

136634436631 is a wasteful number, since it uses less digits than its factorization.

136634436631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640035.

The product of its digits is 1679616, while the sum is 46.

The spelling of 136634436631 in words is "one hundred thirty-six billion, six hundred thirty-four million, four hundred thirty-six thousand, six hundred thirty-one".