13640137563650 has 48 divisors (see below), whose sum is σ = 27323139582144. Its totient is φ = 5036193545280.

The previous prime is 13640137563617. The next prime is 13640137563677. The reversal of 13640137563650 is 5636573104631.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20489939 + ... + 21145161.

It is an arithmetic number, because the mean of its divisors is an integer number (569232074628).

Almost surely, 2^{13640137563650} is an apocalyptic number.

13640137563650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13640137563650 is an abundant number, since it is smaller than the sum of its proper divisors (13683002018494).

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

13640137563650 is a wasteful number, since it uses less digits than its factorization.

13640137563650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687275 (or 687270 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 50.

The spelling of 13640137563650 in words is "thirteen trillion, six hundred forty billion, one hundred thirty-seven million, five hundred sixty-three thousand, six hundred fifty".