545070601721 has 2 divisors, whose sum is σ = 545070601722. Its totient is φ = 545070601720.

The previous prime is 545070601717. The next prime is 545070601723. The reversal of 545070601721 is 127106070545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 437666926096 + 107403675625 = 661564^2 + 327725^2 .

It is a cyclic number.

It is not a de Polignac number, because 545070601721 - 2² = 545070601717 is a prime.

It is a Sophie Germain prime.

Together with 545070601723, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (545070601723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272535300860 + 272535300861.

It is an arithmetic number, because the mean of its divisors is an integer number (272535300861).

Almost surely, 2^545070601721 is an apocalyptic number.

It is an amenable number.

545070601721 is a deficient number, since it is larger than the sum of its proper divisors (1).

545070601721 is an equidigital number, since it uses as much as digits as its factorization.

545070601721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 545070601721 in words is "five hundred forty-five billion, seventy million, six hundred one thousand, seven hundred twenty-one".