523900377617 has 2 divisors, whose sum is σ = 523900377618. Its totient is φ = 523900377616.

The previous prime is 523900377613. The next prime is 523900377619. The reversal of 523900377617 is 716773009325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504226387921 + 19673989696 = 710089^2 + 140264^2 .

It is a cyclic number.

It is not a de Polignac number, because 523900377617 - 2² = 523900377613 is a prime.

It is a super-3 number, since 3×523900377617³ (a number of 36 digits) contains 333 as substring.

Together with 523900377619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (523900377613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261950188808 + 261950188809.

It is an arithmetic number, because the mean of its divisors is an integer number (261950188809).

Almost surely, 2^523900377617 is an apocalyptic number.

It is an amenable number.

523900377617 is a deficient number, since it is larger than the sum of its proper divisors (1).

523900377617 is an equidigital number, since it uses as much as digits as its factorization.

523900377617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1666980, while the sum is 50.

The spelling of 523900377617 in words is "five hundred twenty-three billion, nine hundred million, three hundred seventy-seven thousand, six hundred seventeen".