81000422327 has 16 divisors (see below), whose sum is σ = 90954842112. Its totient is φ = 71502469920.

The previous prime is 81000422273. The next prime is 81000422333. The reversal of 81000422327 is 72322400018.

It is a cyclic number.

It is not a de Polignac number, because 81000422327 - 2⁶ = 81000422263 is a prime.

It is a super-2 number, since 2×81000422327² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81000422327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81000422627) 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, 551168 + ... + 682485.

It is an arithmetic number, because the mean of its divisors is an integer number (5684677632).

Almost surely, 2^81000422327 is an apocalyptic number.

81000422327 is a deficient number, since it is larger than the sum of its proper divisors (9954419785).

81000422327 is a wasteful number, since it uses less digits than its factorization.

81000422327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233838.

The product of its (nonzero) digits is 5376, while the sum is 29.

The spelling of 81000422327 in words is "eighty-one billion, four hundred twenty-two thousand, three hundred twenty-seven".