136994668528 has 80 divisors (see below), whose sum is σ = 292758048000. Its totient is φ = 61812495360.

The previous prime is 136994668519. The next prime is 136994668537. The reversal of 136994668528 is 825866499631.

It is an interprime number because it is at equal distance from previous prime (136994668519) and next prime (136994668537).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644423 + ... + 1725721.

It is an arithmetic number, because the mean of its divisors is an integer number (3659475600).

Almost surely, 2^136994668528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136994668528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146379024000).

136994668528 is an abundant number, since it is smaller than the sum of its proper divisors (155763379472).

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

136994668528 is a wasteful number, since it uses less digits than its factorization.

136994668528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81590 (or 81584 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 67.

The spelling of 136994668528 in words is "one hundred thirty-six billion, nine hundred ninety-four million, six hundred sixty-eight thousand, five hundred twenty-eight".