136640353650 has 24 divisors (see below), whose sum is σ = 338868077424. Its totient is φ = 36437427600.

The previous prime is 136640353639. The next prime is 136640353709. The reversal of 136640353650 is 56353046631.

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, 455467696 + ... + 455467995.

It is an arithmetic number, because the mean of its divisors is an integer number (14119503226).

Almost surely, 2^136640353650 is an apocalyptic number.

136640353650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136640353650 is an abundant number, since it is smaller than the sum of its proper divisors (202227723774).

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

136640353650 is a wasteful number, since it uses less digits than its factorization.

136640353650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910935706 (or 910935701 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 42.

The spelling of 136640353650 in words is "one hundred thirty-six billion, six hundred forty million, three hundred fifty-three thousand, six hundred fifty".