65206751273 has 8 divisors (see below), whose sum is σ = 66973019592. Its totient is φ = 63440689536.

The previous prime is 65206751257. The next prime is 65206751287. The reversal of 65206751273 is 37215760256.

It can be written as a sum of positive squares in 4 ways, for example, as 29047066624 + 36159684649 = 170432^2 + 190157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65206751273 - 2⁴ = 65206751257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65206751213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757511 + ... + 839187.

It is an arithmetic number, because the mean of its divisors is an integer number (8371627449).

Almost surely, 2^65206751273 is an apocalyptic number.

It is an amenable number.

65206751273 is a deficient number, since it is larger than the sum of its proper divisors (1766268319).

65206751273 is a wasteful number, since it uses less digits than its factorization.

65206751273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103291.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 65206751273 in words is "sixty-five billion, two hundred six million, seven hundred fifty-one thousand, two hundred seventy-three".