20911130937 has 32 divisors (see below), whose sum is σ = 31852755200. Its totient is φ = 13548622464.

The previous prime is 20911130927. The next prime is 20911130963. The reversal of 20911130937 is 73903111902.

It is a happy number.

20911130937 is a `hidden beast` number, since 209 + 111 + 309 + 37 = 666.

It is not a de Polignac number, because 20911130937 - 2⁴ = 20911130921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20911130927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906693 + ... + 929469.

It is an arithmetic number, because the mean of its divisors is an integer number (995398600).

Almost surely, 2^20911130937 is an apocalyptic number.

20911130937 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20911130937 is a deficient number, since it is larger than the sum of its proper divisors (10941624263).

20911130937 is a wasteful number, since it uses less digits than its factorization.

20911130937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23742 (or 23736 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The spelling of 20911130937 in words is "twenty billion, nine hundred eleven million, one hundred thirty thousand, nine hundred thirty-seven".