20969407371 has 8 divisors (see below), whose sum is σ = 30500956224. Its totient is φ = 12708731720.

The previous prime is 20969407351. The next prime is 20969407379. The reversal of 20969407371 is 17370496902.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20969407371 - 2⁷ = 20969407243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20969407371.

It is not an unprimeable number, because it can be changed into a prime (20969407379) 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, 317718261 + ... + 317718326.

It is an arithmetic number, because the mean of its divisors is an integer number (3812619528).

Almost surely, 2^20969407371 is an apocalyptic number.

20969407371 is a deficient number, since it is larger than the sum of its proper divisors (9531548853).

20969407371 is a wasteful number, since it uses less digits than its factorization.

20969407371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635436601.

The product of its (nonzero) digits is 571536, while the sum is 48.

The spelling of 20969407371 in words is "twenty billion, nine hundred sixty-nine million, four hundred seven thousand, three hundred seventy-one".