64747229311 has 4 divisors (see below), whose sum is σ = 64748890800. Its totient is φ = 64745567824.

The previous prime is 64747229257. The next prime is 64747229341. The reversal of 64747229311 is 11392274746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64747229311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64747229341) 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, 770851 + ... + 850708.

It is an arithmetic number, because the mean of its divisors is an integer number (16187222700).

Almost surely, 2^64747229311 is an apocalyptic number.

64747229311 is a deficient number, since it is larger than the sum of its proper divisors (1661489).

64747229311 is a wasteful number, since it uses less digits than its factorization.

64747229311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661488.

The product of its digits is 508032, while the sum is 46.

The spelling of 64747229311 in words is "sixty-four billion, seven hundred forty-seven million, two hundred twenty-nine thousand, three hundred eleven".