64131144542 has 8 divisors (see below), whose sum is σ = 96680118000. Its totient is φ = 31904438544.

The previous prime is 64131144523. The next prime is 64131144557. The reversal of 64131144542 is 24544113146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64131144542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80566367 + ... + 80567162.

It is an arithmetic number, because the mean of its divisors is an integer number (12085014750).

Almost surely, 2^64131144542 is an apocalyptic number.

64131144542 is a deficient number, since it is larger than the sum of its proper divisors (32548973458).

64131144542 is a wasteful number, since it uses less digits than its factorization.

64131144542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161133730.

The product of its digits is 46080, while the sum is 35.

Adding to 64131144542 its reverse (24544113146), we get a palindrome (88675257688).

The spelling of 64131144542 in words is "sixty-four billion, one hundred thirty-one million, one hundred forty-four thousand, five hundred forty-two".