924638164561 has 2 divisors, whose sum is σ = 924638164562. Its totient is φ = 924638164560.

The previous prime is 924638164559. The next prime is 924638164591. The reversal of 924638164561 is 165461836429.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859227033025 + 65411131536 = 926945^2 + 255756^2 .

It is an emirp because it is prime and its reverse (165461836429) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 924638164561 - 2¹ = 924638164559 is a prime.

Together with 924638164559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (924638164501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 462319082280 + 462319082281.

It is an arithmetic number, because the mean of its divisors is an integer number (462319082281).

Almost surely, 2^924638164561 is an apocalyptic number.

It is an amenable number.

924638164561 is a deficient number, since it is larger than the sum of its proper divisors (1).

924638164561 is an equidigital number, since it uses as much as digits as its factorization.

924638164561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 55.

The spelling of 924638164561 in words is "nine hundred twenty-four billion, six hundred thirty-eight million, one hundred sixty-four thousand, five hundred sixty-one".