64134615349727 has 6 divisors (see below), whose sum is σ = 69447542065272. Its totient is φ = 59201183399592.

The previous prime is 64134615349723. The next prime is 64134615349789. The reversal of 64134615349727 is 72794351643146.

It is not a de Polignac number, because 64134615349727 - 2² = 64134615349723 is a prime.

It is a super-2 number, since 2×64134615349727² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64134615349727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64134615349723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189747382523 + ... + 189747382860.

It is an arithmetic number, because the mean of its divisors is an integer number (11574590344212).

Almost surely, 2^{64134615349727} is an apocalyptic number.

64134615349727 is a deficient number, since it is larger than the sum of its proper divisors (5312926715545).

64134615349727 is a wasteful number, since it uses less digits than its factorization.

64134615349727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379494765409 (or 379494765396 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 62.

The spelling of 64134615349727 in words is "sixty-four trillion, one hundred thirty-four billion, six hundred fifteen million, three hundred forty-nine thousand, seven hundred twenty-seven".