136354906818 has 32 divisors (see below), whose sum is σ = 326319436800. Its totient is φ = 41955355728.

The previous prime is 136354906813. The next prime is 136354906819. The reversal of 136354906818 is 818609453631.

136354906818 is a `hidden beast` number, since 1 + 36 + 3 + 549 + 0 + 68 + 1 + 8 = 666.

136354906818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×136354906818² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (136354906813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97118178 + ... + 97119581.

It is an arithmetic number, because the mean of its divisors is an integer number (10197482400).

Almost surely, 2^136354906818 is an apocalyptic number.

136354906818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

136354906818 is an abundant number, since it is smaller than the sum of its proper divisors (189964529982).

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

136354906818 is a wasteful number, since it uses less digits than its factorization.

136354906818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194237783 (or 194237777 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 136354906818 in words is "one hundred thirty-six billion, three hundred fifty-four million, nine hundred six thousand, eight hundred eighteen".