76622666121 has 20 divisors (see below), whose sum is σ = 115641042132. Its totient is φ = 50555155968.

The previous prime is 76622666059. The next prime is 76622666177. The reversal of 76622666121 is 12166622667.

It can be written as a sum of positive squares in 2 ways, for example, as 13023374400 + 63599291721 = 114120^2 + 252189^2 .

It is not a de Polignac number, because 76622666121 - 2¹⁴ = 76622649737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76622666191) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4868220 + ... + 4883933.

Almost surely, 2^76622666121 is an apocalyptic number.

It is an amenable number.

76622666121 is a deficient number, since it is larger than the sum of its proper divisors (39018376011).

76622666121 is an equidigital number, since it uses as much as digits as its factorization.

76622666121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752262 (or 9752253 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 76622666121 in words is "seventy-six billion, six hundred twenty-two million, six hundred sixty-six thousand, one hundred twenty-one".