1473721734557 has 2 divisors, whose sum is σ = 1473721734558. Its totient is φ = 1473721734556.

The previous prime is 1473721734473. The next prime is 1473721734559. The reversal of 1473721734557 is 7554371273741.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1351757347801 + 121964386756 = 1162651^2 + 349234^2 .

It is a cyclic number.

It is not a de Polignac number, because 1473721734557 - 2²⁴ = 1473704957341 is a prime.

Together with 1473721734559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1473721734559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736860867278 + 736860867279.

It is an arithmetic number, because the mean of its divisors is an integer number (736860867279).

Almost surely, 2^{1473721734557} is an apocalyptic number.

It is an amenable number.

1473721734557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1473721734557 is an equidigital number, since it uses as much as digits as its factorization.

1473721734557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17287200, while the sum is 56.

The spelling of 1473721734557 in words is "one trillion, four hundred seventy-three billion, seven hundred twenty-one million, seven hundred thirty-four thousand, five hundred fifty-seven".