2136542694664 has 32 divisors (see below), whose sum is σ = 4671740592000. Its totient is φ = 915661153680.

The previous prime is 2136542694617. The next prime is 2136542694679. The reversal of 2136542694664 is 4664962456312.

It is a super-2 number, since 2×2136542694664² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2136542694599 and 2136542694608.

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, 389308972 + ... + 389314459.

It is an arithmetic number, because the mean of its divisors is an integer number (145991893500).

Almost surely, 2^{2136542694664} is an apocalyptic number.

It is an amenable number.

2136542694664 is an abundant number, since it is smaller than the sum of its proper divisors (2535197897336).

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

2136542694664 is an equidigital number, since it uses as much as digits as its factorization.

2136542694664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778623458 (or 778623440 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 58.

The spelling of 2136542694664 in words is "two trillion, one hundred thirty-six billion, five hundred forty-two million, six hundred ninety-four thousand, six hundred sixty-four".