76666020251 has 2 divisors, whose sum is σ = 76666020252. Its totient is φ = 76666020250.

The previous prime is 76666020241. The next prime is 76666020293. The reversal of 76666020251 is 15202066667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76666020251 - 2⁶ = 76666020187 is a prime.

It is a super-2 number, since 2×76666020251² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76666020199 and 76666020208.

It is not a weakly prime, because it can be changed into another prime (76666020241) 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, 38333010125 + 38333010126.

It is an arithmetic number, because the mean of its divisors is an integer number (38333010126).

Almost surely, 2^76666020251 is an apocalyptic number.

76666020251 is a deficient number, since it is larger than the sum of its proper divisors (1).

76666020251 is an equidigital number, since it uses as much as digits as its factorization.

76666020251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 76666020251 in words is "seventy-six billion, six hundred sixty-six million, twenty thousand, two hundred fifty-one".