136261748820 has 24 divisors (see below), whose sum is σ = 381532896864. Its totient is φ = 36336466336.

The previous prime is 136261748771. The next prime is 136261748837. The reversal of 136261748820 is 28847162631.

It is a self number, because there is not a number n which added to its sum of digits gives 136261748820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135514514 + ... + 1135514633.

It is an arithmetic number, because the mean of its divisors is an integer number (15897204036).

Almost surely, 2^136261748820 is an apocalyptic number.

136261748820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136261748820 is an abundant number, since it is smaller than the sum of its proper divisors (245271148044).

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

136261748820 is a wasteful number, since it uses less digits than its factorization.

136261748820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271029159 (or 2271029157 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 136261748820 in words is "one hundred thirty-six billion, two hundred sixty-one million, seven hundred forty-eight thousand, eight hundred twenty".