20957682111 has 8 divisors (see below), whose sum is σ = 27950576304. Its totient is φ = 13968288000.

The previous prime is 20957682107. The next prime is 20957682181. The reversal of 20957682111 is 11128675902.

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

It is not a de Polignac number, because 20957682111 - 2² = 20957682107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20957682101) 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, 861016 + ... + 885021.

It is an arithmetic number, because the mean of its divisors is an integer number (3493822038).

Almost surely, 2^20957682111 is an apocalyptic number.

20957682111 is a deficient number, since it is larger than the sum of its proper divisors (6992894193).

20957682111 is a wasteful number, since it uses less digits than its factorization.

20957682111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750041.

The product of its (nonzero) digits is 60480, while the sum is 42.

The spelling of 20957682111 in words is "twenty billion, nine hundred fifty-seven million, six hundred eighty-two thousand, one hundred eleven".