2138644957362 has 16 divisors (see below), whose sum is σ = 4285861644000. Its totient is φ = 711453030912.

The previous prime is 2138644957357. The next prime is 2138644957381. The reversal of 2138644957362 is 2637594468312.

It is a junction number, because it is equal to n+sod(n) for n = 2138644957296 and 2138644957305.

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, 357152143 + ... + 357158130.

It is an arithmetic number, because the mean of its divisors is an integer number (267866352750).

Almost surely, 2^{2138644957362} is an apocalyptic number.

2138644957362 is an abundant number, since it is smaller than the sum of its proper divisors (2147216686638).

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

2138644957362 is a wasteful number, since it uses less digits than its factorization.

2138644957362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714310777.

The product of its digits is 52254720, while the sum is 60.

The spelling of 2138644957362 in words is "two trillion, one hundred thirty-eight billion, six hundred forty-four million, nine hundred fifty-seven thousand, three hundred sixty-two".