65497259207 has 4 divisors (see below), whose sum is σ = 67094753376. Its totient is φ = 63899765040.

The previous prime is 65497259171. The next prime is 65497259273. The reversal of 65497259207 is 70295279456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65497259207 - 2¹⁴ = 65497242823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65497252207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798747023 + ... + 798747104.

It is an arithmetic number, because the mean of its divisors is an integer number (16773688344).

Almost surely, 2^65497259207 is an apocalyptic number.

65497259207 is a deficient number, since it is larger than the sum of its proper divisors (1597494169).

65497259207 is a wasteful number, since it uses less digits than its factorization.

65497259207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597494168.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 65497259207 in words is "sixty-five billion, four hundred ninety-seven million, two hundred fifty-nine thousand, two hundred seven".