65361266643 has 4 divisors (see below), whose sum is σ = 87148355528. Its totient is φ = 43574177760.

The previous prime is 65361266629. The next prime is 65361266687. The reversal of 65361266643 is 34666216356.

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

It is not a de Polignac number, because 65361266643 - 2¹³ = 65361258451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65361266592 and 65361266601.

It is not an unprimeable number, because it can be changed into a prime (65361261643) 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, 10893544438 + ... + 10893544443.

It is an arithmetic number, because the mean of its divisors is an integer number (21787088882).

Almost surely, 2^65361266643 is an apocalyptic number.

65361266643 is a deficient number, since it is larger than the sum of its proper divisors (21787088885).

65361266643 is a wasteful number, since it uses less digits than its factorization.

65361266643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21787088884.

The product of its digits is 2799360, while the sum is 48.

The spelling of 65361266643 in words is "sixty-five billion, three hundred sixty-one million, two hundred sixty-six thousand, six hundred forty-three".