21736532274 has 16 divisors (see below), whose sum is σ = 43488422208. Its totient is φ = 7242951152.

The previous prime is 21736532269. The next prime is 21736532287. The reversal of 21736532274 is 47223563712.

It is a super-2 number, since 2×21736532274² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621462 + ... + 655505.

It is an arithmetic number, because the mean of its divisors is an integer number (2718026388).

Almost surely, 2^21736532274 is an apocalyptic number.

21736532274 is an abundant number, since it is smaller than the sum of its proper divisors (21751889934).

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

21736532274 is a wasteful number, since it uses less digits than its factorization.

21736532274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279809.

The product of its digits is 423360, while the sum is 42.

The spelling of 21736532274 in words is "twenty-one billion, seven hundred thirty-six million, five hundred thirty-two thousand, two hundred seventy-four".