623365066252381 has 2 divisors, whose sum is σ = 623365066252382. Its totient is φ = 623365066252380.

The previous prime is 623365066252363. The next prime is 623365066252393. The reversal of 623365066252381 is 183252660563326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448016912288100 + 175348153964281 = 21166410^2 + 13241909^2 .

It is a cyclic number.

It is not a de Polignac number, because 623365066252381 - 2⁵ = 623365066252349 is a prime.

It is a super-2 number, since 2×623365066252381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623365066252681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311682533126190 + 311682533126191.

It is an arithmetic number, because the mean of its divisors is an integer number (311682533126191).

Almost surely, 2^{623365066252381} is an apocalyptic number.

It is an amenable number.

623365066252381 is a deficient number, since it is larger than the sum of its proper divisors (1).

623365066252381 is an equidigital number, since it uses as much as digits as its factorization.

623365066252381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 623365066252381 in words is "six hundred twenty-three trillion, three hundred sixty-five billion, sixty-six million, two hundred fifty-two thousand, three hundred eighty-one".