65173248749 has 48 divisors (see below), whose sum is σ = 78368145408. Its totient is φ = 54013665888.

The previous prime is 65173248739. The next prime is 65173248779. The reversal of 65173248749 is 94784237156.

It is not a de Polignac number, because 65173248749 - 2⁸ = 65173248493 is a prime.

Its product of digits (10160640) is a multiple of the sum of its prime factors (1134).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65173248694 and 65173248703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65173248739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129568832 + ... + 129569334.

It is an arithmetic number, because the mean of its divisors is an integer number (1632669696).

Almost surely, 2^65173248749 is an apocalyptic number.

It is an amenable number.

65173248749 is a deficient number, since it is larger than the sum of its proper divisors (13194896659).

65173248749 is a wasteful number, since it uses less digits than its factorization.

65173248749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1127 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 56.

The spelling of 65173248749 in words is "sixty-five billion, one hundred seventy-three million, two hundred forty-eight thousand, seven hundred forty-nine".