564778404107871 has 32 divisors (see below), whose sum is σ = 768123881521920. Its totient is φ = 369048964627200.

The previous prime is 564778404107867. The next prime is 564778404107903. The reversal of 564778404107871 is 178701404877465.

It is not a de Polignac number, because 564778404107871 - 2² = 564778404107867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 564778404107796 and 564778404107805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564778404107851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125956641 + ... + 130363461.

It is an arithmetic number, because the mean of its divisors is an integer number (24003871297560).

Almost surely, 2^{564778404107871} is an apocalyptic number.

564778404107871 is a deficient number, since it is larger than the sum of its proper divisors (203345477414049).

564778404107871 is a wasteful number, since it uses less digits than its factorization.

564778404107871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410967.

The product of its (nonzero) digits is 295034880, while the sum is 69.

The spelling of 564778404107871 in words is "five hundred sixty-four trillion, seven hundred seventy-eight billion, four hundred four million, one hundred seven thousand, eight hundred seventy-one".