81833292769 has 8 divisors (see below), whose sum is σ = 82281581568. Its totient is φ = 81385211040.

The previous prime is 81833292763. The next prime is 81833292781. The reversal of 81833292769 is 96729233818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81833292769 - 2⁷ = 81833292641 is a prime.

It is a super-2 number, since 2×81833292769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81833292763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776949 + ... + 875965.

It is an arithmetic number, because the mean of its divisors is an integer number (10285197696).

Almost surely, 2^81833292769 is an apocalyptic number.

It is an amenable number.

81833292769 is a deficient number, since it is larger than the sum of its proper divisors (448288799).

81833292769 is a wasteful number, since it uses less digits than its factorization.

81833292769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103535.

The product of its digits is 7838208, while the sum is 58.

The spelling of 81833292769 in words is "eighty-one billion, eight hundred thirty-three million, two hundred ninety-two thousand, seven hundred sixty-nine".