64136233511 has 24 divisors (see below), whose sum is σ = 77528755200. Its totient is φ = 51948713376.

The previous prime is 64136233463. The next prime is 64136233531. The reversal of 64136233511 is 11533263146.

It is not a de Polignac number, because 64136233511 - 2³⁴ = 46956364327 is a prime.

It is a super-2 number, since 2×64136233511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64136233531) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 160790 + ... + 392588.

It is an arithmetic number, because the mean of its divisors is an integer number (3230364800).

Almost surely, 2^64136233511 is an apocalyptic number.

64136233511 is a deficient number, since it is larger than the sum of its proper divisors (13392521689).

64136233511 is a wasteful number, since it uses less digits than its factorization.

64136233511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231911 (or 231882 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

Adding to 64136233511 its reverse (11533263146), we get a palindrome (75669496657).

The spelling of 64136233511 in words is "sixty-four billion, one hundred thirty-six million, two hundred thirty-three thousand, five hundred eleven".