2136643215344 has 40 divisors (see below), whose sum is σ = 4516854817968. Its totient is φ = 971036295680.

The previous prime is 2136643215313. The next prime is 2136643215347. The reversal of 2136643215344 is 4435123466312.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2136643215295 and 2136643215304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136643215347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8534 + ... + 2067210.

Almost surely, 2^{2136643215344} is an apocalyptic number.

It is an amenable number.

2136643215344 is an abundant number, since it is smaller than the sum of its proper divisors (2380211602624).

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

2136643215344 is a wasteful number, since it uses less digits than its factorization.

2136643215344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064593 (or 2064587 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The spelling of 2136643215344 in words is "two trillion, one hundred thirty-six billion, six hundred forty-three million, two hundred fifteen thousand, three hundred forty-four".