735480220721 has 2 divisors, whose sum is σ = 735480220722. Its totient is φ = 735480220720.

The previous prime is 735480220649. The next prime is 735480220751. The reversal of 735480220721 is 127022084537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727583410225 + 7896810496 = 852985^2 + 88864^2 .

It is a cyclic number.

It is not a de Polignac number, because 735480220721 - 2³⁴ = 718300351537 is a prime.

It is not a weakly prime, because it can be changed into another prime (735480220751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367740110360 + 367740110361.

It is an arithmetic number, because the mean of its divisors is an integer number (367740110361).

Almost surely, 2^735480220721 is an apocalyptic number.

It is an amenable number.

735480220721 is a deficient number, since it is larger than the sum of its proper divisors (1).

735480220721 is an equidigital number, since it uses as much as digits as its factorization.

735480220721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 735480220721 in words is "seven hundred thirty-five billion, four hundred eighty million, two hundred twenty thousand, seven hundred twenty-one".