7424132077721 has 2 divisors, whose sum is σ = 7424132077722. Its totient is φ = 7424132077720.

The previous prime is 7424132077679. The next prime is 7424132077783. The reversal of 7424132077721 is 1277702314247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4279681050121 + 3144451027600 = 2068739^2 + 1773260^2 .

It is an emirp because it is prime and its reverse (1277702314247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7424132077721 - 2⁶ = 7424132077657 is a prime.

It is not a weakly prime, because it can be changed into another prime (7424132076721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712066038860 + 3712066038861.

It is an arithmetic number, because the mean of its divisors is an integer number (3712066038861).

Almost surely, 2^{7424132077721} is an apocalyptic number.

It is an amenable number.

7424132077721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7424132077721 is an equidigital number, since it uses as much as digits as its factorization.

7424132077721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921984, while the sum is 47.

The spelling of 7424132077721 in words is "seven trillion, four hundred twenty-four billion, one hundred thirty-two million, seventy-seven thousand, seven hundred twenty-one".