81496012 has 24 divisors (see below), whose sum is σ = 153885872. Its totient is φ = 37540800.

The previous prime is 81495989. The next prime is 81496021. The reversal of 81496012 is 21069418.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33187 + ... + 35557.

Almost surely, 2^81496012 is an apocalyptic number.

It is an amenable number.

81496012 is a deficient number, since it is larger than the sum of its proper divisors (72389860).

81496012 is a wasteful number, since it uses less digits than its factorization.

81496012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 81496012 is about 9027.5141650401. The cubic root of 81496012 is about 433.5562511177.

It can be divided in two parts, 8149 and 6012, that added together give a square (14161 = 119²).

The spelling of 81496012 in words is "eighty-one million, four hundred ninety-six thousand, twelve".