64081540794 has 16 divisors (see below), whose sum is σ = 128341342080. Its totient is φ = 21330803520.

The previous prime is 64081540793. The next prime is 64081540799. The reversal of 64081540794 is 49704518046.

It is not an unprimeable number, because it can be changed into a prime (64081540793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7422847 + ... + 7431474.

It is an arithmetic number, because the mean of its divisors is an integer number (8021333880).

Almost surely, 2^64081540794 is an apocalyptic number.

64081540794 is an abundant number, since it is smaller than the sum of its proper divisors (64259801286).

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

64081540794 is a wasteful number, since it uses less digits than its factorization.

64081540794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855045.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 64081540794 in words is "sixty-four billion, eighty-one million, five hundred forty thousand, seven hundred ninety-four".