21230680674 has 32 divisors (see below), whose sum is σ = 51081338880. Its totient is φ = 5746650192.

The previous prime is 21230680661. The next prime is 21230680699. The reversal of 21230680674 is 47608603212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13301634 + ... + 13303229.

It is an arithmetic number, because the mean of its divisors is an integer number (1596291840).

Almost surely, 2^21230680674 is an apocalyptic number.

21230680674 is an abundant number, since it is smaller than the sum of its proper divisors (29850658206).

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

21230680674 is a wasteful number, since it uses less digits than its factorization.

21230680674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26604894.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 21230680674 in words is "twenty-one billion, two hundred thirty million, six hundred eighty thousand, six hundred seventy-four".