766473561481 has 2 divisors, whose sum is σ = 766473561482. Its totient is φ = 766473561480.

The previous prime is 766473561409. The next prime is 766473561523. The reversal of 766473561481 is 184165374667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488064315456 + 278409246025 = 698616^2 + 527645^2 .

It is a cyclic number.

It is not a de Polignac number, because 766473561481 - 2²³ = 766465172873 is a prime.

It is a super-2 number, since 2×766473561481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (766473561881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383236780740 + 383236780741.

It is an arithmetic number, because the mean of its divisors is an integer number (383236780741).

Almost surely, 2^766473561481 is an apocalyptic number.

It is an amenable number.

766473561481 is a deficient number, since it is larger than the sum of its proper divisors (1).

766473561481 is an equidigital number, since it uses as much as digits as its factorization.

766473561481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 58.

The spelling of 766473561481 in words is "seven hundred sixty-six billion, four hundred seventy-three million, five hundred sixty-one thousand, four hundred eighty-one".