136512556440 has 128 divisors (see below), whose sum is σ = 441224582400. Its totient is φ = 33589071360.

The previous prime is 136512556393. The next prime is 136512556441. The reversal of 136512556440 is 44655215631.

It is a junction number, because it is equal to n+sod(n) for n = 136512556392 and 136512556401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136512556441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4006275 + ... + 4040205.

It is an arithmetic number, because the mean of its divisors is an integer number (3447067050).

Almost surely, 2^136512556440 is an apocalyptic number.

136512556440 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 136512556440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220612291200).

136512556440 is an abundant number, since it is smaller than the sum of its proper divisors (304712025960).

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

136512556440 is a wasteful number, since it uses less digits than its factorization.

136512556440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36537 (or 36533 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 136512556440 in words is "one hundred thirty-six billion, five hundred twelve million, five hundred fifty-six thousand, four hundred forty".