763825132561 has 2 divisors, whose sum is σ = 763825132562. Its totient is φ = 763825132560.

The previous prime is 763825132541. The next prime is 763825132619. The reversal of 763825132561 is 165231528367.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518954548225 + 244870584336 = 720385^2 + 494844^2 .

It is an emirp because it is prime and its reverse (165231528367) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 763825132561 - 2¹⁹ = 763824608273 is a prime.

It is not a weakly prime, because it can be changed into another prime (763825132501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381912566280 + 381912566281.

It is an arithmetic number, because the mean of its divisors is an integer number (381912566281).

Almost surely, 2^763825132561 is an apocalyptic number.

It is an amenable number.

763825132561 is a deficient number, since it is larger than the sum of its proper divisors (1).

763825132561 is an equidigital number, since it uses as much as digits as its factorization.

763825132561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The spelling of 763825132561 in words is "seven hundred sixty-three billion, eight hundred twenty-five million, one hundred thirty-two thousand, five hundred sixty-one".