136662604749 has 48 divisors (see below), whose sum is σ = 229874112000. Its totient is φ = 77361328800.

The previous prime is 136662604747. The next prime is 136662604759. The reversal of 136662604749 is 947406266631.

It is a happy number.

It is not a de Polignac number, because 136662604749 - 2¹ = 136662604747 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136662604695 and 136662604704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136662604747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378099 + ... + 645200.

It is an arithmetic number, because the mean of its divisors is an integer number (4789044000).

Almost surely, 2^136662604749 is an apocalyptic number.

136662604749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

136662604749 is a deficient number, since it is larger than the sum of its proper divisors (93211507251).

136662604749 is a wasteful number, since it uses less digits than its factorization.

136662604749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023406 (or 1023403 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 136662604749 in words is "one hundred thirty-six billion, six hundred sixty-two million, six hundred four thousand, seven hundred forty-nine".