65642513223 has 48 divisors (see below), whose sum is σ = 110068149120. Its totient is φ = 34575315264.

The previous prime is 65642513161. The next prime is 65642513249. The reversal of 65642513223 is 32231524656.

It is not a de Polignac number, because 65642513223 - 2⁹ = 65642512711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65642511223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214261 + ... + 420942.

It is an arithmetic number, because the mean of its divisors is an integer number (2293086440).

Almost surely, 2^65642513223 is an apocalyptic number.

65642513223 is a deficient number, since it is larger than the sum of its proper divisors (44425635897).

65642513223 is a wasteful number, since it uses less digits than its factorization.

65642513223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635276 (or 635269 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The spelling of 65642513223 in words is "sixty-five billion, six hundred forty-two million, five hundred thirteen thousand, two hundred twenty-three".