136352723868 has 48 divisors (see below), whose sum is σ = 353545780000. Its totient is φ = 45445929984.

The previous prime is 136352723867. The next prime is 136352723879. The reversal of 136352723868 is 868327253631.

It is a happy number.

136352723868 is a `hidden beast` number, since 1 + 36 + 3 + 527 + 2 + 3 + 86 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136352723867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997308 + ... + 1125756.

Almost surely, 2^136352723868 is an apocalyptic number.

136352723868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136352723868 is an abundant number, since it is smaller than the sum of its proper divisors (217193056132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136352723868 is a wasteful number, since it uses less digits than its factorization.

136352723868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138291 (or 138283 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 136352723868 in words is "one hundred thirty-six billion, three hundred fifty-two million, seven hundred twenty-three thousand, eight hundred sixty-eight".