21673443273704 has 32 divisors (see below), whose sum is σ = 41095395117000. Its totient is φ = 10714677676032.

The previous prime is 21673443273701. The next prime is 21673443273763. The reversal of 21673443273704 is 40737234437612.

It can be written as a sum of positive squares in 4 ways, for example, as 19353822892804 + 2319620380900 = 4399298^2 + 1523030^2 .

It is not an unprimeable number, because it can be changed into a prime (21673443273701) 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, 27976112 + ... + 28740384.

Almost surely, 2^{21673443273704} is an apocalyptic number.

It is an amenable number.

21673443273704 is a deficient number, since it is larger than the sum of its proper divisors (19421951843296).

21673443273704 is a wasteful number, since it uses less digits than its factorization.

21673443273704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804197 (or 804193 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 53.

The spelling of 21673443273704 in words is "twenty-one trillion, six hundred seventy-three billion, four hundred forty-three million, two hundred seventy-three thousand, seven hundred four".