81824892133 has 16 divisors (see below), whose sum is σ = 87711894144. Its totient is φ = 76060477440.

The previous prime is 81824892131. The next prime is 81824892143. The reversal of 81824892133 is 33129842818.

It is a cyclic number.

It is not a de Polignac number, because 81824892133 - 2¹ = 81824892131 is a prime.

It is a super-3 number, since 3×81824892133³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81824892131) 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, 752118 + ... + 854008.

It is an arithmetic number, because the mean of its divisors is an integer number (5481993384).

Almost surely, 2^81824892133 is an apocalyptic number.

It is an amenable number.

81824892133 is a deficient number, since it is larger than the sum of its proper divisors (5887002011).

81824892133 is a wasteful number, since it uses less digits than its factorization.

81824892133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102492.

The product of its digits is 663552, while the sum is 49.

The spelling of 81824892133 in words is "eighty-one billion, eight hundred twenty-four million, eight hundred ninety-two thousand, one hundred thirty-three".