2163746704660 has 24 divisors (see below), whose sum is σ = 4543896750120. Its totient is φ = 865493220864.

The previous prime is 2163746704649. The next prime is 2163746704661. The reversal of 2163746704660 is 664076473612.

It can be written as a sum of positive squares in 4 ways, for example, as 431980191504 + 1731766513156 = 657252^2 + 1315966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2163746704598 and 2163746704607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163746704661) 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, 4787152 + ... + 5219608.

It is an arithmetic number, because the mean of its divisors is an integer number (189329031255).

Almost surely, 2^{2163746704660} is an apocalyptic number.

2163746704660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2163746704660 is an abundant number, since it is smaller than the sum of its proper divisors (2380150045460).

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

2163746704660 is a wasteful number, since it uses less digits than its factorization.

2163746704660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682635 (or 682633 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 2163746704660 in words is "two trillion, one hundred sixty-three billion, seven hundred forty-six million, seven hundred four thousand, six hundred sixty".