65243634258 has 32 divisors (see below), whose sum is σ = 142359213312. Its totient is φ = 19769483600.

The previous prime is 65243634221. The next prime is 65243634271. The reversal of 65243634258 is 85243634256.

65243634258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65243634258² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515985 + ... + 1558427.

It is an arithmetic number, because the mean of its divisors is an integer number (4448725416).

Almost surely, 2^65243634258 is an apocalyptic number.

65243634258 is an abundant number, since it is smaller than the sum of its proper divisors (77115579054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65243634258 is a wasteful number, since it uses less digits than its factorization.

65243634258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65750.

The product of its digits is 4147200, while the sum is 48.

The spelling of 65243634258 in words is "sixty-five billion, two hundred forty-three million, six hundred thirty-four thousand, two hundred fifty-eight".