81610253022253 has 16 divisors (see below), whose sum is σ = 82320428736000. Its totient is φ = 80902330542000.

The previous prime is 81610253022223. The next prime is 81610253022341. The reversal of 81610253022253 is 35222035201618.

It is a cyclic number.

It is not a de Polignac number, because 81610253022253 - 2³³ = 81601663087661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81610253022223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080441626 + ... + 2080480852.

It is an arithmetic number, because the mean of its divisors is an integer number (5145026796000).

Almost surely, 2^{81610253022253} is an apocalyptic number.

It is an amenable number.

81610253022253 is a deficient number, since it is larger than the sum of its proper divisors (710175713747).

81610253022253 is a wasteful number, since it uses less digits than its factorization.

81610253022253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67488.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 81610253022253 in words is "eighty-one trillion, six hundred ten billion, two hundred fifty-three million, twenty-two thousand, two hundred fifty-three".