523407764543387 has 2 divisors, whose sum is σ = 523407764543388. Its totient is φ = 523407764543386.

The previous prime is 523407764543341. The next prime is 523407764543429. The reversal of 523407764543387 is 783345467704325.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 523407764543387 - 2³⁰ = 523406690801563 is a prime.

It is not a weakly prime, because it can be changed into another prime (523407764543687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261703882271693 + 261703882271694.

It is an arithmetic number, because the mean of its divisors is an integer number (261703882271694).

Almost surely, 2^{523407764543387} is an apocalyptic number.

523407764543387 is a deficient number, since it is larger than the sum of its proper divisors (1).

523407764543387 is an equidigital number, since it uses as much as digits as its factorization.

523407764543387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1422489600, while the sum is 68.

The spelling of 523407764543387 in words is "five hundred twenty-three trillion, four hundred seven billion, seven hundred sixty-four million, five hundred forty-three thousand, three hundred eighty-seven".