65798859849 has 16 divisors (see below), whose sum is σ = 89781280512. Its totient is φ = 42841381968.

The previous prime is 65798859821. The next prime is 65798859857. The reversal of 65798859849 is 94895889756.

It is a de Polignac number, because none of the positive numbers 2^k-65798859849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65798859809) 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, 1657774 + ... + 1697000.

It is an arithmetic number, because the mean of its divisors is an integer number (5611330032).

Almost surely, 2^65798859849 is an apocalyptic number.

It is an amenable number.

65798859849 is a deficient number, since it is larger than the sum of its proper divisors (23982420663).

65798859849 is a wasteful number, since it uses less digits than its factorization.

65798859849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52276.

The product of its digits is 1567641600, while the sum is 78.

The spelling of 65798859849 in words is "sixty-five billion, seven hundred ninety-eight million, eight hundred fifty-nine thousand, eight hundred forty-nine".