81152466 has 8 divisors (see below), whose sum is σ = 162304944. Its totient is φ = 27050820.

The previous prime is 81152459. The next prime is 81152471. The reversal of 81152466 is 66425118.

It is a sphenic number, since it is the product of 3 distinct primes.

81152466 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6762700 + ... + 6762711.

It is an arithmetic number, because the mean of its divisors is an integer number (20288118).

Almost surely, 2^81152466 is an apocalyptic number.

81152466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81152466 is a wasteful number, since it uses less digits than its factorization.

81152466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13525416.

The product of its digits is 11520, while the sum is 33.

The square root of 81152466 is about 9008.4663511610. The cubic root of 81152466 is about 432.9461750410.

It can be divided in two parts, 81152 and 466, that added together give a palindrome (81618).

The spelling of 81152466 in words is "eighty-one million, one hundred fifty-two thousand, four hundred sixty-six".