136721114123578 has 16 divisors (see below), whose sum is σ = 206488853812800. Its totient is φ = 67891711212000.

The previous prime is 136721114123557. The next prime is 136721114123609. The reversal of 136721114123578 is 875321411127631.

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, 52482603 + ... + 55026046.

It is an arithmetic number, because the mean of its divisors is an integer number (12905553363300).

Almost surely, 2^{136721114123578} is an apocalyptic number.

136721114123578 is a deficient number, since it is larger than the sum of its proper divisors (69767739689222).

136721114123578 is a wasteful number, since it uses less digits than its factorization.

136721114123578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107513013.

The product of its digits is 1693440, while the sum is 52.

The spelling of 136721114123578 in words is "one hundred thirty-six trillion, seven hundred twenty-one billion, one hundred fourteen million, one hundred twenty-three thousand, five hundred seventy-eight".