81833577460 has 48 divisors (see below), whose sum is σ = 172831341312. Its totient is φ = 32546908800.

The previous prime is 81833577457. The next prime is 81833577473. The reversal of 81833577460 is 6477533818.

It is a junction number, because it is equal to n+sod(n) for n = 81833577398 and 81833577407.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4645870 + ... + 4663450.

It is an arithmetic number, because the mean of its divisors is an integer number (3600652944).

Almost surely, 2^81833577460 is an apocalyptic number.

It is an amenable number.

81833577460 is an abundant number, since it is smaller than the sum of its proper divisors (90997763852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81833577460 is a wasteful number, since it uses less digits than its factorization.

81833577460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18904 (or 18902 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 81833577460 in words is "eighty-one billion, eight hundred thirty-three million, five hundred seventy-seven thousand, four hundred sixty".