65091381299 has 32 divisors (see below), whose sum is σ = 75668567040. Its totient is φ = 54843973632.

The previous prime is 65091381283. The next prime is 65091381317. The reversal of 65091381299 is 99218319056.

It is a happy number.

It is not a de Polignac number, because 65091381299 - 2⁴ = 65091381283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65091381299.

It is not an unprimeable number, because it can be changed into a prime (65091381259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98772632 + ... + 98773290.

It is an arithmetic number, because the mean of its divisors is an integer number (2364642720).

Almost surely, 2^65091381299 is an apocalyptic number.

65091381299 is a deficient number, since it is larger than the sum of its proper divisors (10577185741).

65091381299 is a wasteful number, since it uses less digits than its factorization.

65091381299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 65091381299 in words is "sixty-five billion, ninety-one million, three hundred eighty-one thousand, two hundred ninety-nine".