136721400398 has 16 divisors (see below), whose sum is σ = 224230968576. Its totient is φ = 62005802040.

The previous prime is 136721400373. The next prime is 136721400427. The reversal of 136721400398 is 893004127631.

136721400398 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7004486 + ... + 7023977.

It is an arithmetic number, because the mean of its divisors is an integer number (14014435536).

Almost surely, 2^136721400398 is an apocalyptic number.

136721400398 is a deficient number, since it is larger than the sum of its proper divisors (87509568178).

136721400398 is a wasteful number, since it uses less digits than its factorization.

136721400398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14028919.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 136721400398 in words is "one hundred thirty-six billion, seven hundred twenty-one million, four hundred thousand, three hundred ninety-eight".