64571403469 has 16 divisors (see below), whose sum is σ = 67185538560. Its totient is φ = 61991167680.

The previous prime is 64571403397. The next prime is 64571403493. The reversal of 64571403469 is 96430417546.

It is a cyclic number.

It is not a de Polignac number, because 64571403469 - 2⁷ = 64571403341 is a prime.

It is a super-2 number, since 2×64571403469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64571400469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6428319 + ... + 6438355.

It is an arithmetic number, because the mean of its divisors is an integer number (4199096160).

Almost surely, 2^64571403469 is an apocalyptic number.

It is an amenable number.

64571403469 is a deficient number, since it is larger than the sum of its proper divisors (2614135091).

64571403469 is a wasteful number, since it uses less digits than its factorization.

64571403469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11700.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 64571403469 in words is "sixty-four billion, five hundred seventy-one million, four hundred three thousand, four hundred sixty-nine".