64713261349 has 4 divisors (see below), whose sum is σ = 70596285120. Its totient is φ = 58830237580.

The previous prime is 64713261341. The next prime is 64713261383. The reversal of 64713261349 is 94316231746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64713261349 - 2³ = 64713261341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64713261299 and 64713261308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64713261341) 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, 2941511869 + ... + 2941511890.

It is an arithmetic number, because the mean of its divisors is an integer number (17649071280).

Almost surely, 2^64713261349 is an apocalyptic number.

It is an amenable number.

64713261349 is a deficient number, since it is larger than the sum of its proper divisors (5883023771).

64713261349 is a wasteful number, since it uses less digits than its factorization.

64713261349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883023770.

The product of its digits is 653184, while the sum is 46.

The spelling of 64713261349 in words is "sixty-four billion, seven hundred thirteen million, two hundred sixty-one thousand, three hundred forty-nine".