771261421171 has 16 divisors (see below), whose sum is σ = 777681515520. Its totient is φ = 764873902080.

The previous prime is 771261421169. The next prime is 771261421199. The reversal of 771261421171 is 171124162177.

It is a cyclic number.

It is not a de Polignac number, because 771261421171 - 2¹ = 771261421169 is a prime.

It is a super-2 number, since 2×771261421171² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (771261421871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72488470 + ... + 72499108.

It is an arithmetic number, because the mean of its divisors is an integer number (48605094720).

Almost surely, 2^771261421171 is an apocalyptic number.

771261421171 is a deficient number, since it is larger than the sum of its proper divisors (6420094349).

771261421171 is a wasteful number, since it uses less digits than its factorization.

771261421171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12114.

The product of its digits is 32928, while the sum is 40.

The spelling of 771261421171 in words is "seven hundred seventy-one billion, two hundred sixty-one million, four hundred twenty-one thousand, one hundred seventy-one".