564551662381 has 16 divisors (see below), whose sum is σ = 665315659008. Its totient is φ = 468972432000.

The previous prime is 564551662379. The next prime is 564551662397. The reversal of 564551662381 is 183266155465.

It is not a de Polignac number, because 564551662381 - 2¹ = 564551662379 is a prime.

It is a super-2 number, since 2×564551662381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564551662351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6470170 + ... + 6556843.

It is an arithmetic number, because the mean of its divisors is an integer number (41582228688).

Almost surely, 2^564551662381 is an apocalyptic number.

It is an amenable number.

564551662381 is a deficient number, since it is larger than the sum of its proper divisors (100763996627).

564551662381 is a wasteful number, since it uses less digits than its factorization.

564551662381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13027212.

The product of its digits is 5184000, while the sum is 52.

The spelling of 564551662381 in words is "five hundred sixty-four billion, five hundred fifty-one million, six hundred sixty-two thousand, three hundred eighty-one".