822001042691 has 4 divisors (see below), whose sum is σ = 822008001000. Its totient is φ = 821994084384.

The previous prime is 822001042661. The next prime is 822001042697. The reversal of 822001042691 is 196240100228.

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 822001042691 - 2⁶ = 822001042627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822001042697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298841 + ... + 3539258.

It is an arithmetic number, because the mean of its divisors is an integer number (205502000250).

Almost surely, 2^822001042691 is an apocalyptic number.

822001042691 is a deficient number, since it is larger than the sum of its proper divisors (6958309).

822001042691 is a wasteful number, since it uses less digits than its factorization.

822001042691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958308.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 822001042691 in words is "eight hundred twenty-two billion, one million, forty-two thousand, six hundred ninety-one".