65930231749 has 4 divisors (see below), whose sum is σ = 65939379436. Its totient is φ = 65921084064.

The previous prime is 65930231747. The next prime is 65930231771. The reversal of 65930231749 is 94713203956.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37227773025 + 28702458724 = 192945^2 + 169418^2 .

It is a cyclic number.

It is not a de Polignac number, because 65930231749 - 2¹ = 65930231747 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 (65930231747) 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, 4563024 + ... + 4577449.

It is an arithmetic number, because the mean of its divisors is an integer number (16484844859).

Almost surely, 2^65930231749 is an apocalyptic number.

It is an amenable number.

65930231749 is a deficient number, since it is larger than the sum of its proper divisors (9147687).

65930231749 is an equidigital number, since it uses as much as digits as its factorization.

65930231749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9147686.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 65930231749 in words is "sixty-five billion, nine hundred thirty million, two hundred thirty-one thousand, seven hundred forty-nine".