81266272006383 has 24 divisors (see below), whose sum is σ = 118719022649760. Its totient is φ = 53561793035520.

The previous prime is 81266272006373. The next prime is 81266272006399. The reversal of 81266272006383 is 38360027266218.

81266272006383 is a `hidden beast` number, since 8 + 1 + 2 + 6 + 627 + 2 + 0 + 0 + 6 + 3 + 8 + 3 = 666.

It is not a de Polignac number, because 81266272006383 - 2²⁴ = 81266255229167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81266272006343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465163 + ... + 12757308.

It is an arithmetic number, because the mean of its divisors is an integer number (4946625943740).

Almost surely, 2^{81266272006383} is an apocalyptic number.

81266272006383 is a deficient number, since it is larger than the sum of its proper divisors (37452750643377).

81266272006383 is a wasteful number, since it uses less digits than its factorization.

81266272006383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13230239 (or 13230236 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 81266272006383 in words is "eighty-one trillion, two hundred sixty-six billion, two hundred seventy-two million, six thousand, three hundred eighty-three".