136404036400 has 60 divisors (see below), whose sum is σ = 328115560024. Its totient is φ = 54494208000.

The previous prime is 136404036361. The next prime is 136404036401. The reversal of 136404036400 is 4630404631.

It is a happy number.

It is a super-2 number, since 2×136404036400² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136404036401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114160 + ... + 534640.

Almost surely, 2^136404036400 is an apocalyptic number.

136404036400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136404036400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164057780012).

136404036400 is an abundant number, since it is smaller than the sum of its proper divisors (191711523624).

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

136404036400 is a wasteful number, since it uses less digits than its factorization.

136404036400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421310 (or 421299 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 136404036400 in words is "one hundred thirty-six billion, four hundred four million, thirty-six thousand, four hundred".