727626145457 has 2 divisors, whose sum is σ = 727626145458. Its totient is φ = 727626145456.

The previous prime is 727626145417. The next prime is 727626145511. The reversal of 727626145457 is 754541626727.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429150769216 + 298475376241 = 655096^2 + 546329^2 .

It is a cyclic number.

It is not a de Polignac number, because 727626145457 - 2¹⁰ = 727626144433 is a prime.

It is a super-2 number, since 2×727626145457² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (727626145417) 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, 363813072728 + 363813072729.

It is an arithmetic number, because the mean of its divisors is an integer number (363813072729).

Almost surely, 2^727626145457 is an apocalyptic number.

It is an amenable number.

727626145457 is a deficient number, since it is larger than the sum of its proper divisors (1).

727626145457 is an equidigital number, since it uses as much as digits as its factorization.

727626145457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19756800, while the sum is 56.

The spelling of 727626145457 in words is "seven hundred twenty-seven billion, six hundred twenty-six million, one hundred forty-five thousand, four hundred fifty-seven".