21701232476 has 24 divisors (see below), whose sum is σ = 47348144256. Its totient is φ = 8455025520.

The previous prime is 21701232437. The next prime is 21701232491. The reversal of 21701232476 is 67423210712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35228966 + ... + 35229581.

It is an arithmetic number, because the mean of its divisors is an integer number (1972839344).

Almost surely, 2^21701232476 is an apocalyptic number.

It is an amenable number.

21701232476 is an abundant number, since it is smaller than the sum of its proper divisors (25646911780).

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

21701232476 is a wasteful number, since it uses less digits than its factorization.

21701232476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70458569 (or 70458567 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 21701232476 in words is "twenty-one billion, seven hundred one million, two hundred thirty-two thousand, four hundred seventy-six".