64711408407 has 4 divisors (see below), whose sum is σ = 86281877880. Its totient is φ = 43140938936.

The previous prime is 64711408387. The next prime is 64711408441. The reversal of 64711408407 is 70480411746.

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 64711408407 - 2¹² = 64711404311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64711408207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10785234732 + ... + 10785234737.

It is an arithmetic number, because the mean of its divisors is an integer number (21570469470).

Almost surely, 2^64711408407 is an apocalyptic number.

64711408407 is a deficient number, since it is larger than the sum of its proper divisors (21570469473).

64711408407 is a wasteful number, since it uses less digits than its factorization.

64711408407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570469472.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 64711408407 in words is "sixty-four billion, seven hundred eleven million, four hundred eight thousand, four hundred seven".