21340293902 has 8 divisors (see below), whose sum is σ = 33893408016. Its totient is φ = 10042491232.

The previous prime is 21340293899. The next prime is 21340293911. The reversal of 21340293902 is 20939204312.

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

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, 313827818 + ... + 313827885.

It is an arithmetic number, because the mean of its divisors is an integer number (4236676002).

Almost surely, 2^21340293902 is an apocalyptic number.

21340293902 is a deficient number, since it is larger than the sum of its proper divisors (12553114114).

21340293902 is a wasteful number, since it uses less digits than its factorization.

21340293902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627655722.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 21340293902 in words is "twenty-one billion, three hundred forty million, two hundred ninety-three thousand, nine hundred two".