21674140742 has 8 divisors (see below), whose sum is σ = 32511842856. Its totient is φ = 10836859792.

The previous prime is 21674140711. The next prime is 21674140751. The reversal of 21674140742 is 24704147612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21674140696 and 21674140705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118493 + ... + 239559.

It is an arithmetic number, because the mean of its divisors is an integer number (4063980357).

Almost surely, 2^21674140742 is an apocalyptic number.

21674140742 is a deficient number, since it is larger than the sum of its proper divisors (10837702114).

21674140742 is a wasteful number, since it uses less digits than its factorization.

21674140742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210582.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 21674140742 in words is "twenty-one billion, six hundred seventy-four million, one hundred forty thousand, seven hundred forty-two".