21397283350 has 48 divisors (see below), whose sum is σ = 40504001328. Its totient is φ = 8408586240.

The previous prime is 21397283293. The next prime is 21397283389. The reversal of 21397283350 is 5338279312.

It is a junction number, because it is equal to n+sod(n) for n = 21397283297 and 21397283306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648349 + ... + 680551.

It is an arithmetic number, because the mean of its divisors is an integer number (843833361).

Almost surely, 2^21397283350 is an apocalyptic number.

21397283350 is a deficient number, since it is larger than the sum of its proper divisors (19106717978).

21397283350 is a wasteful number, since it uses less digits than its factorization.

21397283350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32449 (or 32444 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 21397283350 in words is "twenty-one billion, three hundred ninety-seven million, two hundred eighty-three thousand, three hundred fifty".