81069620333 has 32 divisors (see below), whose sum is σ = 94285320192. Its totient is φ = 69149260800.

The previous prime is 81069620329. The next prime is 81069620351. The reversal of 81069620333 is 33302696018.

It is a cyclic number.

It is not a de Polignac number, because 81069620333 - 2² = 81069620329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81069620393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724385 + ... + 828777.

It is an arithmetic number, because the mean of its divisors is an integer number (2946416256).

Almost surely, 2^81069620333 is an apocalyptic number.

It is an amenable number.

81069620333 is a deficient number, since it is larger than the sum of its proper divisors (13215699859).

81069620333 is a wasteful number, since it uses less digits than its factorization.

81069620333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104525.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 81069620333 in words is "eighty-one billion, sixty-nine million, six hundred twenty thousand, three hundred thirty-three".