64131643342 has 16 divisors (see below), whose sum is σ = 104603073120. Its totient is φ = 29311847712.

The previous prime is 64131643339. The next prime is 64131643349. The reversal of 64131643342 is 24334613146.

It is a super-2 number, since 2×64131643342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64131643349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11971117 + ... + 11976472.

It is an arithmetic number, because the mean of its divisors is an integer number (6537692070).

Almost surely, 2^64131643342 is an apocalyptic number.

64131643342 is a deficient number, since it is larger than the sum of its proper divisors (40471429778).

64131643342 is a wasteful number, since it uses less digits than its factorization.

64131643342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23947707.

The product of its digits is 124416, while the sum is 37.

The spelling of 64131643342 in words is "sixty-four billion, one hundred thirty-one million, six hundred forty-three thousand, three hundred forty-two".