81733525710320 has 80 divisors (see below), whose sum is σ = 207547278445440. Its totient is φ = 29686681939200.

The previous prime is 81733525710307. The next prime is 81733525710341. The reversal of 81733525710320 is 2301752533718.

It is a tau number, because it is divible by the number of its divisors (80).

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, 53306366 + ... + 54818205.

It is an arithmetic number, because the mean of its divisors is an integer number (2594340980568).

Almost surely, 2^{81733525710320} is an apocalyptic number.

81733525710320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

81733525710320 is an abundant number, since it is smaller than the sum of its proper divisors (125813752735120).

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

81733525710320 is a wasteful number, since it uses less digits than its factorization.

81733525710320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108125454 (or 108125448 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 81733525710320 in words is "eighty-one trillion, seven hundred thirty-three billion, five hundred twenty-five million, seven hundred ten thousand, three hundred twenty".