21902353368502 has 8 divisors (see below), whose sum is σ = 33741463297536. Its totient is φ = 10655198935992.

The previous prime is 21902353368491. The next prime is 21902353368523. The reversal of 21902353368502 is 20586335320912.

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, 147988874038 + ... + 147988874185.

It is an arithmetic number, because the mean of its divisors is an integer number (4217682912192).

Almost surely, 2^{21902353368502} is an apocalyptic number.

21902353368502 is a deficient number, since it is larger than the sum of its proper divisors (11839109929034).

21902353368502 is a wasteful number, since it uses less digits than its factorization.

21902353368502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295977748262.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 21902353368502 in words is "twenty-one trillion, nine hundred two billion, three hundred fifty-three million, three hundred sixty-eight thousand, five hundred two".