716237542631557 has 2 divisors, whose sum is σ = 716237542631558. Its totient is φ = 716237542631556.

The previous prime is 716237542631497. The next prime is 716237542631561. The reversal of 716237542631557 is 755136245732617.

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., 710887786425441 + 5349756206116 = 26662479^2 + 2312954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716237542631557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716237542631657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358118771315778 + 358118771315779.

It is an arithmetic number, because the mean of its divisors is an integer number (358118771315779).

Almost surely, 2^{716237542631557} is an apocalyptic number.

It is an amenable number.

716237542631557 is a deficient number, since it is larger than the sum of its proper divisors (1).

716237542631557 is an equidigital number, since it uses as much as digits as its factorization.

716237542631557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264000, while the sum is 64.

The spelling of 716237542631557 in words is "seven hundred sixteen trillion, two hundred thirty-seven billion, five hundred forty-two million, six hundred thirty-one thousand, five hundred fifty-seven".