65771799450907 has 16 divisors (see below), whose sum is σ = 72822526526592. Its totient is φ = 58899664897920.

The previous prime is 65771799450883. The next prime is 65771799450919. The reversal of 65771799450907 is 70905499717756.

It is not a de Polignac number, because 65771799450907 - 2¹⁵ = 65771799418139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65771799456907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127599763 + ... + 128114179.

It is an arithmetic number, because the mean of its divisors is an integer number (4551407907912).

Almost surely, 2^{65771799450907} is an apocalyptic number.

65771799450907 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

65771799450907 is a deficient number, since it is larger than the sum of its proper divisors (7050727075685).

65771799450907 is a wasteful number, since it uses less digits than its factorization.

65771799450907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687978.

The product of its (nonzero) digits is 1050197400, while the sum is 76.

The spelling of 65771799450907 in words is "sixty-five trillion, seven hundred seventy-one billion, seven hundred ninety-nine million, four hundred fifty thousand, nine hundred seven".