76351726981 has 2 divisors, whose sum is σ = 76351726982. Its totient is φ = 76351726980.

The previous prime is 76351726973. The next prime is 76351726991. The reversal of 76351726981 is 18962715367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45365166081 + 30986560900 = 212991^2 + 176030^2 .

It is a cyclic number.

It is not a de Polignac number, because 76351726981 - 2³ = 76351726973 is a prime.

It is a super-2 number, since 2×76351726981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76351726921) 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, 38175863490 + 38175863491.

It is an arithmetic number, because the mean of its divisors is an integer number (38175863491).

Almost surely, 2^76351726981 is an apocalyptic number.

It is an amenable number.

76351726981 is a deficient number, since it is larger than the sum of its proper divisors (1).

76351726981 is an equidigital number, since it uses as much as digits as its factorization.

76351726981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 55.

The spelling of 76351726981 in words is "seventy-six billion, three hundred fifty-one million, seven hundred twenty-six thousand, nine hundred eighty-one".