21739253762 has 8 divisors (see below), whose sum is σ = 32857803792. Its totient is φ = 10786652500.

The previous prime is 21739253707. The next prime is 21739253771. The reversal of 21739253762 is 26735293712.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41486864 + ... + 41487387.

It is an arithmetic number, because the mean of its divisors is an integer number (4107225474).

Almost surely, 2^21739253762 is an apocalyptic number.

21739253762 is a deficient number, since it is larger than the sum of its proper divisors (11118550030).

21739253762 is a wasteful number, since it uses less digits than its factorization.

21739253762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82974384.

The product of its digits is 952560, while the sum is 47.

The spelling of 21739253762 in words is "twenty-one billion, seven hundred thirty-nine million, two hundred fifty-three thousand, seven hundred sixty-two".