136571264640 has 96 divisors (see below), whose sum is σ = 471597668100. Its totient is φ = 36419002368.

The previous prime is 136571264581. The next prime is 136571264653. The reversal of 136571264640 is 46462175631.

136571264640 is a `hidden beast` number, since 1 + 3 + 65 + 7 + 126 + 464 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 114693304896 + 21877959744 = 338664^2 + 147912^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11849385 + ... + 11860904.

Almost surely, 2^136571264640 is an apocalyptic number.

136571264640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136571264640 is an abundant number, since it is smaller than the sum of its proper divisors (335026403460).

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

136571264640 is a wasteful number, since it uses less digits than its factorization.

136571264640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710314 (or 23710299 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 136571264640 in words is "one hundred thirty-six billion, five hundred seventy-one million, two hundred sixty-four thousand, six hundred forty".