766475441881 has 2 divisors, whose sum is σ = 766475441882. Its totient is φ = 766475441880.

The previous prime is 766475441867. The next prime is 766475441887. The reversal of 766475441881 is 188144574667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513752065225 + 252723376656 = 716765^2 + 502716^2 .

It is a cyclic number.

It is not a de Polignac number, because 766475441881 - 2³³ = 757885507289 is a prime.

It is a super-2 number, since 2×766475441881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (766475441887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383237720940 + 383237720941.

It is an arithmetic number, because the mean of its divisors is an integer number (383237720941).

Almost surely, 2^766475441881 is an apocalyptic number.

It is an amenable number.

766475441881 is a deficient number, since it is larger than the sum of its proper divisors (1).

766475441881 is an equidigital number, since it uses as much as digits as its factorization.

766475441881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36126720, while the sum is 61.

The spelling of 766475441881 in words is "seven hundred sixty-six billion, four hundred seventy-five million, four hundred forty-one thousand, eight hundred eighty-one".