21927624274 has 4 divisors (see below), whose sum is σ = 32891436414. Its totient is φ = 10963812136.

The previous prime is 21927624239. The next prime is 21927624319. The reversal of 21927624274 is 47242672912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16112494225 + 5815130049 = 126935^2 + 76257^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5481906067 + ... + 5481906070.

Almost surely, 2^21927624274 is an apocalyptic number.

21927624274 is a deficient number, since it is larger than the sum of its proper divisors (10963812140).

21927624274 is a wasteful number, since it uses less digits than its factorization.

21927624274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10963812139.

The product of its digits is 677376, while the sum is 46.

The spelling of 21927624274 in words is "twenty-one billion, nine hundred twenty-seven million, six hundred twenty-four thousand, two hundred seventy-four".