22043142491 has 2 divisors, whose sum is σ = 22043142492. Its totient is φ = 22043142490.

The previous prime is 22043142487. The next prime is 22043142547. The reversal of 22043142491 is 19424134022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22043142491 - 2² = 22043142487 is a prime.

It is not a weakly prime, because it can be changed into another prime (22043142481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021571245 + 11021571246.

It is an arithmetic number, because the mean of its divisors is an integer number (11021571246).

Almost surely, 2^22043142491 is an apocalyptic number.

22043142491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22043142491 is an equidigital number, since it uses as much as digits as its factorization.

22043142491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 22043142491 in words is "twenty-two billion, forty-three million, one hundred forty-two thousand, four hundred ninety-one".