42822657991 has 4 divisors (see below), whose sum is σ = 44299301400. Its totient is φ = 41346014584.

The previous prime is 42822657973. The next prime is 42822658061. The reversal of 42822657991 is 19975622824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42822657991 - 2⁷ = 42822657863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42822657791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738321661 + ... + 738321718.

It is an arithmetic number, because the mean of its divisors is an integer number (11074825350).

Almost surely, 2^42822657991 is an apocalyptic number.

42822657991 is a deficient number, since it is larger than the sum of its proper divisors (1476643409).

42822657991 is a wasteful number, since it uses less digits than its factorization.

42822657991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476643408.

The product of its digits is 4354560, while the sum is 55.

The spelling of 42822657991 in words is "forty-two billion, eight hundred twenty-two million, six hundred fifty-seven thousand, nine hundred ninety-one".