64796574571 has 16 divisors (see below), whose sum is σ = 65839533760. Its totient is φ = 63762370560.

The previous prime is 64796574539. The next prime is 64796574599. The reversal of 64796574571 is 17547569746.

It is a happy number.

It is a 12-Lehmer number, since φ(64796574571) divides (64796574571-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 64796574571 - 2⁵ = 64796574539 is a prime.

It is a super-2 number, since 2×64796574571² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64796571571) 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 15 ways as a sum of consecutive naturals, for example, 28405951 + ... + 28408231.

It is an arithmetic number, because the mean of its divisors is an integer number (4114970860).

Almost surely, 2^64796574571 is an apocalyptic number.

64796574571 is the 146966-th hex number.

64796574571 is a deficient number, since it is larger than the sum of its proper divisors (1042959189).

64796574571 is a wasteful number, since it uses less digits than its factorization.

64796574571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006.

The product of its digits is 44452800, while the sum is 61.

The spelling of 64796574571 in words is "sixty-four billion, seven hundred ninety-six million, five hundred seventy-four thousand, five hundred seventy-one".