6564396254181 has 8 divisors (see below), whose sum is σ = 8752559761440. Its totient is φ = 4376248458192.

The previous prime is 6564396254179. The next prime is 6564396254279. The reversal of 6564396254181 is 1814526934656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6564396254181 - 2¹ = 6564396254179 is a prime.

It is a super-2 number, since 2×6564396254181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564396254681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2915655 + ... + 4650788.

It is an arithmetic number, because the mean of its divisors is an integer number (1094069970180).

Almost surely, 2^{6564396254181} is an apocalyptic number.

It is an amenable number.

6564396254181 is a deficient number, since it is larger than the sum of its proper divisors (2188163507259).

6564396254181 is a wasteful number, since it uses less digits than its factorization.

6564396254181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855635.

The product of its digits is 37324800, while the sum is 60.

The spelling of 6564396254181 in words is "six trillion, five hundred sixty-four billion, three hundred ninety-six million, two hundred fifty-four thousand, one hundred eighty-one".