2136802437664 has 24 divisors (see below), whose sum is σ = 4206990519900. Its totient is φ = 1068360400896.

The previous prime is 2136802437661. The next prime is 2136802437673. The reversal of 2136802437664 is 4667342086312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2136800768400 + 1669264 = 1461780^2 + 1292^2 .

It is not an unprimeable number, because it can be changed into a prime (2136802437661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415969 + ... + 2108704.

Almost surely, 2^{2136802437664} is an apocalyptic number.

It is an amenable number.

2136802437664 is a deficient number, since it is larger than the sum of its proper divisors (2070188082236).

2136802437664 is a wasteful number, since it uses less digits than its factorization.

2136802437664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551132 (or 2551124 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 2136802437664 in words is "two trillion, one hundred thirty-six billion, eight hundred two million, four hundred thirty-seven thousand, six hundred sixty-four".