21839110274 has 4 divisors (see below), whose sum is σ = 32758665414. Its totient is φ = 10919555136.

The previous prime is 21839110253. The next prime is 21839110277. The reversal of 21839110274 is 47201193812.

It is a happy number.

21839110274 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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., 15423901249 + 6415209025 = 124193^2 + 80095^2 .

It is not an unprimeable number, because it can be changed into a prime (21839110277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5459777567 + ... + 5459777570.

Almost surely, 2^21839110274 is an apocalyptic number.

21839110274 is a deficient number, since it is larger than the sum of its proper divisors (10919555140).

21839110274 is a wasteful number, since it uses less digits than its factorization.

21839110274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10919555139.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 21839110274 in words is "twenty-one billion, eight hundred thirty-nine million, one hundred ten thousand, two hundred seventy-four".