81266272006382 has 32 divisors (see below), whose sum is σ = 125726475549312. Its totient is φ = 39373715765664.

The previous prime is 81266272006373. The next prime is 81266272006399. The reversal of 81266272006382 is 28360027266218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830053 + ... + 12879504.

It is an arithmetic number, because the mean of its divisors is an integer number (3928952360916).

Almost surely, 2^{81266272006382} is an apocalyptic number.

81266272006382 is a deficient number, since it is larger than the sum of its proper divisors (44460203542930).

81266272006382 is a wasteful number, since it uses less digits than its factorization.

81266272006382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14710112.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 81266272006382 in words is "eighty-one trillion, two hundred sixty-six billion, two hundred seventy-two million, six thousand, three hundred eighty-two".