22020547491 has 48 divisors (see below), whose sum is σ = 34964957664. Its totient is φ = 13801342464.

The previous prime is 22020547427. The next prime is 22020547501. The reversal of 22020547491 is 19474502022.

22020547491 is a `hidden beast` number, since 2 + 2 + 0 + 20 + 547 + 4 + 91 = 666.

It is not a de Polignac number, because 22020547491 - 2⁶ = 22020547427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22020547411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4512745 + ... + 4517621.

It is an arithmetic number, because the mean of its divisors is an integer number (728436618).

Almost surely, 2^22020547491 is an apocalyptic number.

22020547491 is a deficient number, since it is larger than the sum of its proper divisors (12944410173).

22020547491 is a wasteful number, since it uses less digits than its factorization.

22020547491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002 (or 5990 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 22020547491 in words is "twenty-two billion, twenty million, five hundred forty-seven thousand, four hundred ninety-one".