2163726632772 has 48 divisors (see below), whose sum is σ = 5609807985600. Its totient is φ = 721223395200.

The previous prime is 2163726632759. The next prime is 2163726632773. The reversal of 2163726632772 is 2772366273612.

2163726632772 is a `hidden beast` number, since 21 + 6 + 37 + 266 + 327 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2163726632773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4257804 + ... + 4738812.

It is an arithmetic number, because the mean of its divisors is an integer number (116870999700).

Almost surely, 2^{2163726632772} is an apocalyptic number.

It is an amenable number.

2163726632772 is an abundant number, since it is smaller than the sum of its proper divisors (3446081352828).

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

2163726632772 is a wasteful number, since it uses less digits than its factorization.

2163726632772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522673 (or 522665 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 54.

The spelling of 2163726632772 in words is "two trillion, one hundred sixty-three billion, seven hundred twenty-six million, six hundred thirty-two thousand, seven hundred seventy-two".