20940369105 has 16 divisors (see below), whose sum is σ = 33605820864. Its totient is φ = 11134453440.

The previous prime is 20940369029. The next prime is 20940369133. The reversal of 20940369105 is 50196304902.

It is not a de Polignac number, because 20940369105 - 2⁹ = 20940368593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2103834 + ... + 2113763.

It is an arithmetic number, because the mean of its divisors is an integer number (2100363804).

Almost surely, 2^20940369105 is an apocalyptic number.

It is an amenable number.

20940369105 is a deficient number, since it is larger than the sum of its proper divisors (12665451759).

20940369105 is a wasteful number, since it uses less digits than its factorization.

20940369105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217936.

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 20940369105 in words is "twenty billion, nine hundred forty million, three hundred sixty-nine thousand, one hundred five".