623596180861 has 2 divisors, whose sum is σ = 623596180862. Its totient is φ = 623596180860.

The previous prime is 623596180853. The next prime is 623596180919. The reversal of 623596180861 is 168081695326.

623596180861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623333935225 + 262245636 = 789515^2 + 16194^2 .

It is a cyclic number.

It is not a de Polignac number, because 623596180861 - 2³ = 623596180853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623596180841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311798090430 + 311798090431.

It is an arithmetic number, because the mean of its divisors is an integer number (311798090431).

Almost surely, 2^623596180861 is an apocalyptic number.

It is an amenable number.

623596180861 is a deficient number, since it is larger than the sum of its proper divisors (1).

623596180861 is an equidigital number, since it uses as much as digits as its factorization.

623596180861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 623596180861 in words is "six hundred twenty-three billion, five hundred ninety-six million, one hundred eighty thousand, eight hundred sixty-one".