81462025183 has 16 divisors (see below), whose sum is σ = 104040195840. Its totient is φ = 61928683200.

The previous prime is 81462025181. The next prime is 81462025201. The reversal of 81462025183 is 38152026418.

It is a cyclic number.

It is not a de Polignac number, because 81462025183 - 2¹ = 81462025181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81462025181) 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, 12898653 + ... + 12904966.

It is an arithmetic number, because the mean of its divisors is an integer number (6502512240).

Almost surely, 2^81462025183 is an apocalyptic number.

81462025183 is a deficient number, since it is larger than the sum of its proper divisors (22578170657).

81462025183 is a wasteful number, since it uses less digits than its factorization.

81462025183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25803678.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 81462025183 in words is "eighty-one billion, four hundred sixty-two million, twenty-five thousand, one hundred eighty-three".