2136643403672 has 16 divisors (see below), whose sum is σ = 4006238404560. Its totient is φ = 1068313162464.

The previous prime is 2136643403669. The next prime is 2136643403701. The reversal of 2136643403672 is 2763043466312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66878 + ... + 2068274.

It is an arithmetic number, because the mean of its divisors is an integer number (250389900285).

Almost surely, 2^{2136643403672} is an apocalyptic number.

It is an amenable number.

2136643403672 is a deficient number, since it is larger than the sum of its proper divisors (1869595000888).

2136643403672 is a wasteful number, since it uses less digits than its factorization.

2136643403672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134850 (or 2134846 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 47.

Adding to 2136643403672 its reverse (2763043466312), we get a palindrome (4899686869984).

The spelling of 2136643403672 in words is "two trillion, one hundred thirty-six billion, six hundred forty-three million, four hundred three thousand, six hundred seventy-two".