81467581262 has 16 divisors (see below), whose sum is σ = 124009667712. Its totient is φ = 40131832440.

The previous prime is 81467581243. The next prime is 81467581267. The reversal of 81467581262 is 26218576418.

It is a self number, because there is not a number n which added to its sum of digits gives 81467581262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81467581267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613 + ... + 403655.

It is an arithmetic number, because the mean of its divisors is an integer number (7750604232).

Almost surely, 2^81467581262 is an apocalyptic number.

81467581262 is a deficient number, since it is larger than the sum of its proper divisors (42542086450).

81467581262 is a wasteful number, since it uses less digits than its factorization.

81467581262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403543.

The product of its digits is 1290240, while the sum is 50.

The spelling of 81467581262 in words is "eighty-one billion, four hundred sixty-seven million, five hundred eighty-one thousand, two hundred sixty-two".