136601643880 has 64 divisors (see below), whose sum is σ = 331050378960. Its totient is φ = 50429288448.

The previous prime is 136601643833. The next prime is 136601643881. The reversal of 136601643880 is 88346106631.

It can be written as a sum of positive squares in 8 ways, for example, as 338780836 + 136262863044 = 18406^2 + 369138^2 .

It is a super-2 number, since 2×136601643880² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136601643880.

It is not an unprimeable number, because it can be changed into a prime (136601643881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3826594 + ... + 3862126.

Almost surely, 2^136601643880 is an apocalyptic number.

136601643880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136601643880 is an abundant number, since it is smaller than the sum of its proper divisors (194448735080).

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

136601643880 is a wasteful number, since it uses less digits than its factorization.

136601643880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42950 (or 42946 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 136601643880 in words is "one hundred thirty-six billion, six hundred one million, six hundred forty-three thousand, eight hundred eighty".