64548137613 has 16 divisors (see below), whose sum is σ = 87390104256. Its totient is φ = 42369740160.

The previous prime is 64548137609. The next prime is 64548137653. The reversal of 64548137613 is 31673184546.

It is a happy number.

It is not a de Polignac number, because 64548137613 - 2² = 64548137609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64548137653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355345 + ... + 505337.

It is an arithmetic number, because the mean of its divisors is an integer number (5461881516).

Almost surely, 2^64548137613 is an apocalyptic number.

It is an amenable number.

64548137613 is a deficient number, since it is larger than the sum of its proper divisors (22841966643).

64548137613 is a wasteful number, since it uses less digits than its factorization.

64548137613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152204.

The product of its digits is 1451520, while the sum is 48.

The spelling of 64548137613 in words is "sixty-four billion, five hundred forty-eight million, one hundred thirty-seven thousand, six hundred thirteen".