523377515873 has 2 divisors, whose sum is σ = 523377515874. Its totient is φ = 523377515872.

The previous prime is 523377515861. The next prime is 523377515957. The reversal of 523377515873 is 378515773325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429800870464 + 93576645409 = 655592^2 + 305903^2 .

It is a cyclic number.

It is not a de Polignac number, because 523377515873 - 2³² = 519082548577 is a prime.

It is not a weakly prime, because it can be changed into another prime (523377514873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261688757936 + 261688757937.

It is an arithmetic number, because the mean of its divisors is an integer number (261688757937).

Almost surely, 2^523377515873 is an apocalyptic number.

It is an amenable number.

523377515873 is a deficient number, since it is larger than the sum of its proper divisors (1).

523377515873 is an equidigital number, since it uses as much as digits as its factorization.

523377515873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522000, while the sum is 56.

The spelling of 523377515873 in words is "five hundred twenty-three billion, three hundred seventy-seven million, five hundred fifteen thousand, eight hundred seventy-three".