136644062421125 has 24 divisors (see below), whose sum is σ = 198373714792344. Its totient is φ = 93698785656000.

The previous prime is 136644062421089. The next prime is 136644062421149. The reversal of 136644062421125 is 521124260446631.

It can be written as a sum of positive squares in 4 ways, for example, as 6408355549729 + 130235706871396 = 2531473^2 + 11412086^2 .

It is not a de Polignac number, because 136644062421125 - 2¹⁴ = 136644062404741 is a prime.

It is a super-3 number, since 3×136644062421125³ (a number of 43 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136644062421125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11154611216 + ... + 11154623465.

It is an arithmetic number, because the mean of its divisors is an integer number (8265571449681).

Almost surely, 2^{136644062421125} is an apocalyptic number.

It is an amenable number.

136644062421125 is a deficient number, since it is larger than the sum of its proper divisors (61729652371219).

136644062421125 is an equidigital number, since it uses as much as digits as its factorization.

136644062421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22309234710 (or 22309234693 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 136644062421125 in words is "one hundred thirty-six trillion, six hundred forty-four billion, sixty-two million, four hundred twenty-one thousand, one hundred twenty-five".