721796054407 has 2 divisors, whose sum is σ = 721796054408. Its totient is φ = 721796054406.

The previous prime is 721796054401. The next prime is 721796054411. The reversal of 721796054407 is 704450697127.

It is a happy number.

721796054407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 721796054407 - 2²³ = 721787665799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721796054401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360898027203 + 360898027204.

It is an arithmetic number, because the mean of its divisors is an integer number (360898027204).

Almost surely, 2^721796054407 is an apocalyptic number.

721796054407 is a deficient number, since it is larger than the sum of its proper divisors (1).

721796054407 is an equidigital number, since it uses as much as digits as its factorization.

721796054407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 721796054407 in words is "seven hundred twenty-one billion, seven hundred ninety-six million, fifty-four thousand, four hundred seven".