64433506116131 has 4 divisors (see below), whose sum is σ = 64433666781000. Its totient is φ = 64433345451264.

The previous prime is 64433506116127. The next prime is 64433506116169. The reversal of 64433506116131 is 13161160533446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64433506116131 - 2² = 64433506116127 is a prime.

It is a super-2 number, since 2×64433506116131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64433506116191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79729361 + ... + 80533458.

It is an arithmetic number, because the mean of its divisors is an integer number (16108416695250).

Almost surely, 2^{64433506116131} is an apocalyptic number.

64433506116131 is a deficient number, since it is larger than the sum of its proper divisors (160664869).

64433506116131 is a wasteful number, since it uses less digits than its factorization.

64433506116131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160664868.

The product of its (nonzero) digits is 466560, while the sum is 44.

Adding to 64433506116131 its reverse (13161160533446), we get a palindrome (77594666649577).

The spelling of 64433506116131 in words is "sixty-four trillion, four hundred thirty-three billion, five hundred six million, one hundred sixteen thousand, one hundred thirty-one".