623575964277493 has 2 divisors, whose sum is σ = 623575964277494. Its totient is φ = 623575964277492.

The previous prime is 623575964277491. The next prime is 623575964277517. The reversal of 623575964277493 is 394772469575326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623551690014289 + 24274263204 = 24971017^2 + 155802^2 .

It is a cyclic number.

It is not a de Polignac number, because 623575964277493 - 2¹ = 623575964277491 is a prime.

Together with 623575964277491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623575964277491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311787982138746 + 311787982138747.

It is an arithmetic number, because the mean of its divisors is an integer number (311787982138747).

Almost surely, 2^{623575964277493} is an apocalyptic number.

It is an amenable number.

623575964277493 is a deficient number, since it is larger than the sum of its proper divisors (1).

623575964277493 is an equidigital number, since it uses as much as digits as its factorization.

623575964277493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14402707200, while the sum is 79.

The spelling of 623575964277493 in words is "six hundred twenty-three trillion, five hundred seventy-five billion, nine hundred sixty-four million, two hundred seventy-seven thousand, four hundred ninety-three".