21069207382 has 8 divisors (see below), whose sum is σ = 31605733656. Its totient is φ = 10533962832.

The previous prime is 21069207353. The next prime is 21069207391. The reversal of 21069207382 is 28370296012.

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

It is a super-2 number, since 2×21069207382² (a number of 21 digits) contains 22 as substring.

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, 278223 + ... + 345754.

It is an arithmetic number, because the mean of its divisors is an integer number (3950716707).

Almost surely, 2^21069207382 is an apocalyptic number.

21069207382 is a deficient number, since it is larger than the sum of its proper divisors (10536526274).

21069207382 is a wasteful number, since it uses less digits than its factorization.

21069207382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640862.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 21069207382 in words is "twenty-one billion, sixty-nine million, two hundred seven thousand, three hundred eighty-two".