21132732674 has 16 divisors (see below), whose sum is σ = 34646455296. Its totient is φ = 9624014400.

The previous prime is 21132732659. The next prime is 21132732679. The reversal of 21132732674 is 47623723112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21132732679) 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, 10023962 + ... + 10026069.

It is an arithmetic number, because the mean of its divisors is an integer number (2165403456).

Almost surely, 2^21132732674 is an apocalyptic number.

21132732674 is a deficient number, since it is larger than the sum of its proper divisors (13513722622).

21132732674 is a wasteful number, since it uses less digits than its factorization.

21132732674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20050081.

The product of its digits is 84672, while the sum is 38.

The spelling of 21132732674 in words is "twenty-one billion, one hundred thirty-two million, seven hundred thirty-two thousand, six hundred seventy-four".