81096463964 has 12 divisors (see below), whose sum is σ = 142012746288. Its totient is φ = 40521393600.

The previous prime is 81096463937. The next prime is 81096464003. The reversal of 81096463964 is 46936469018.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6702797 + ... + 6714884.

It is an arithmetic number, because the mean of its divisors is an integer number (11834395524).

Almost surely, 2^81096463964 is an apocalyptic number.

It is an amenable number.

81096463964 is a deficient number, since it is larger than the sum of its proper divisors (60916282324).

81096463964 is a wasteful number, since it uses less digits than its factorization.

81096463964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13419196 (or 13419194 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 81096463964 in words is "eighty-one billion, ninety-six million, four hundred sixty-three thousand, nine hundred sixty-four".