81794122800155 has 8 divisors (see below), whose sum is σ = 98153155980384. Its totient is φ = 65435159160000.

The previous prime is 81794122800133. The next prime is 81794122800157. The reversal of 81794122800155 is 55100822149718.

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

It is not a de Polignac number, because 81794122800155 - 2¹⁰ = 81794122799131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81794122800097 and 81794122800106.

It is not an unprimeable number, because it can be changed into a prime (81794122800157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14761346 + ... + 19531655.

It is an arithmetic number, because the mean of its divisors is an integer number (12269144497548).

Almost surely, 2^{81794122800155} is an apocalyptic number.

81794122800155 is a deficient number, since it is larger than the sum of its proper divisors (16359033180229).

81794122800155 is a wasteful number, since it uses less digits than its factorization.

81794122800155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34770037.

The product of its (nonzero) digits is 1612800, while the sum is 53.

The spelling of 81794122800155 in words is "eighty-one trillion, seven hundred ninety-four billion, one hundred twenty-two million, eight hundred thousand, one hundred fifty-five".