7626001320781 has 2 divisors, whose sum is σ = 7626001320782. Its totient is φ = 7626001320780.

The previous prime is 7626001320737. The next prime is 7626001320793. The reversal of 7626001320781 is 1870231006267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6787249405225 + 838751915556 = 2605235^2 + 915834^2 .

It is a cyclic number.

It is not a de Polignac number, because 7626001320781 - 2²⁷ = 7625867103053 is a prime.

It is a super-2 number, since 2×7626001320781² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7626001320731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3813000660390 + 3813000660391.

It is an arithmetic number, because the mean of its divisors is an integer number (3813000660391).

Almost surely, 2^{7626001320781} is an apocalyptic number.

It is an amenable number.

7626001320781 is a deficient number, since it is larger than the sum of its proper divisors (1).

7626001320781 is an equidigital number, since it uses as much as digits as its factorization.

7626001320781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 7626001320781 in words is "seven trillion, six hundred twenty-six billion, one million, three hundred twenty thousand, seven hundred eighty-one".