65742423745 has 4 divisors (see below), whose sum is σ = 78890908500. Its totient is φ = 52593938992.

The previous prime is 65742423707. The next prime is 65742423763. The reversal of 65742423745 is 54732424756.

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 22430154289 + 43312269456 = 149767^2 + 208116^2 .

It is a cyclic number.

It is not a de Polignac number, because 65742423745 - 2¹¹ = 65742421697 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6574242370 + ... + 6574242379.

It is an arithmetic number, because the mean of its divisors is an integer number (19722727125).

Almost surely, 2^65742423745 is an apocalyptic number.

It is an amenable number.

65742423745 is a deficient number, since it is larger than the sum of its proper divisors (13148484755).

65742423745 is a wasteful number, since it uses less digits than its factorization.

65742423745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13148484754.

The product of its digits is 5644800, while the sum is 49.

The spelling of 65742423745 in words is "sixty-five billion, seven hundred forty-two million, four hundred twenty-three thousand, seven hundred forty-five".