64516129742 has 8 divisors (see below), whose sum is σ = 96779899656. Its totient is φ = 32256163192.

The previous prime is 64516129721. The next prime is 64516129747. The reversal of 64516129742 is 24792161546.

64516129742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64516129747) 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, 908048 + ... + 976515.

It is an arithmetic number, because the mean of its divisors is an integer number (12097487457).

Almost surely, 2^64516129742 is an apocalyptic number.

64516129742 is a deficient number, since it is larger than the sum of its proper divisors (32263769914).

64516129742 is a wasteful number, since it uses less digits than its factorization.

64516129742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901682.

The product of its digits is 725760, while the sum is 47.

The spelling of 64516129742 in words is "sixty-four billion, five hundred sixteen million, one hundred twenty-nine thousand, seven hundred forty-two".