273211921457 has 2 divisors, whose sum is σ = 273211921458. Its totient is φ = 273211921456.

The previous prime is 273211921417. The next prime is 273211921469. The reversal of 273211921457 is 754129112372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229871343601 + 43340577856 = 479449^2 + 208184^2 .

It is a cyclic number.

It is not a de Polignac number, because 273211921457 - 2¹⁴ = 273211905073 is a prime.

It is not a weakly prime, because it can be changed into another prime (273211921417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136605960728 + 136605960729.

It is an arithmetic number, because the mean of its divisors is an integer number (136605960729).

Almost surely, 2^273211921457 is an apocalyptic number.

It is an amenable number.

273211921457 is a deficient number, since it is larger than the sum of its proper divisors (1).

273211921457 is an equidigital number, since it uses as much as digits as its factorization.

273211921457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The spelling of 273211921457 in words is "two hundred seventy-three billion, two hundred eleven million, nine hundred twenty-one thousand, four hundred fifty-seven".