65994228475801 has 16 divisors (see below), whose sum is σ = 70163508260160. Its totient is φ = 61856929792000.

The previous prime is 65994228475787. The next prime is 65994228475823. The reversal of 65994228475801 is 10857482249956.

It is a cyclic number.

It is not a de Polignac number, because 65994228475801 - 2¹⁹ = 65994227951513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65994228475841) 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, 32892870 + ... + 34841488.

It is an arithmetic number, because the mean of its divisors is an integer number (4385219266260).

Almost surely, 2^{65994228475801} is an apocalyptic number.

It is an amenable number.

65994228475801 is a deficient number, since it is larger than the sum of its proper divisors (4169279784359).

65994228475801 is a wasteful number, since it uses less digits than its factorization.

65994228475801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956824.

The product of its (nonzero) digits is 348364800, while the sum is 70.

The spelling of 65994228475801 in words is "sixty-five trillion, nine hundred ninety-four billion, two hundred twenty-eight million, four hundred seventy-five thousand, eight hundred one".