64880723743 has 4 divisors (see below), whose sum is σ = 70778971368. Its totient is φ = 58982476120.

The previous prime is 64880723741. The next prime is 64880723753. The reversal of 64880723743 is 34732708846.

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

It is a cyclic number.

It is not a de Polignac number, because 64880723743 - 2¹ = 64880723741 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 (64880723741) 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, 2949123796 + ... + 2949123817.

It is an arithmetic number, because the mean of its divisors is an integer number (17694742842).

Almost surely, 2^64880723743 is an apocalyptic number.

64880723743 is a deficient number, since it is larger than the sum of its proper divisors (5898247625).

64880723743 is a wasteful number, since it uses less digits than its factorization.

64880723743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898247624.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 64880723743 in words is "sixty-four billion, eight hundred eighty million, seven hundred twenty-three thousand, seven hundred forty-three".