21333948351 has 8 divisors (see below), whose sum is σ = 28604177280. Its totient is φ = 14143175832.

The previous prime is 21333948347. The next prime is 21333948367. The reversal of 21333948351 is 15384933312.

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

It is not a de Polignac number, because 21333948351 - 2² = 21333948347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333948301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19863475 + ... + 19864548.

It is an arithmetic number, because the mean of its divisors is an integer number (3575522160).

Almost surely, 2^21333948351 is an apocalyptic number.

21333948351 is a deficient number, since it is larger than the sum of its proper divisors (7270228929).

21333948351 is a wasteful number, since it uses less digits than its factorization.

21333948351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39728205.

The product of its digits is 233280, while the sum is 42.

The spelling of 21333948351 in words is "twenty-one billion, three hundred thirty-three million, nine hundred forty-eight thousand, three hundred fifty-one".