136687970718 has 384 divisors, whose sum is σ = 361803939840. Its totient is φ = 37976117760.

The previous prime is 136687970717. The next prime is 136687970761. The reversal of 136687970718 is 817079786631.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136687970717) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 997722346 + ... + 997722482.

It is an arithmetic number, because the mean of its divisors is an integer number (942197760).

Almost surely, 2^136687970718 is an apocalyptic number.

136687970718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136687970718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180901969920).

136687970718 is an abundant number, since it is smaller than the sum of its proper divisors (225115969122).

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

136687970718 is a wasteful number, since it uses less digits than its factorization.

136687970718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 136687970718 in words is "one hundred thirty-six billion, six hundred eighty-seven million, nine hundred seventy thousand, seven hundred eighteen".