65075499801 has 81 divisors (see below), whose sum is σ = 105674868351. Its totient is φ = 38570968800.

The previous prime is 65075499763. The next prime is 65075499817. The reversal of 65075499801 is 10899457056.

The square root of 65075499801 is 255099.

It is a perfect power (a square), and thus also a powerful number.

65075499801 is a `hidden beast` number, since 6 + 5 + 0 + 7 + 549 + 98 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9626553225 + 55448946576 = 98115^2 + 235476^2 .

It is not a de Polignac number, because 65075499801 - 2⁹ = 65075499289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65075499821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 308414586 + ... + 308414796.

Almost surely, 2^65075499801 is an apocalyptic number.

65075499801 is the 255099-th square number.

65075499801 is the 127550-th centered octagonal number.

It is an amenable number.

65075499801 is a deficient number, since it is larger than the sum of its proper divisors (40599368550).

65075499801 is a wasteful number, since it uses less digits than its factorization.

65075499801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 65075499801 in words is "sixty-five billion, seventy-five million, four hundred ninety-nine thousand, eight hundred one".