1061110550557 has 2 divisors, whose sum is σ = 1061110550558. Its totient is φ = 1061110550556.

The previous prime is 1061110550497. The next prime is 1061110550579. The reversal of 1061110550557 is 7550550111601.

1061110550557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038373228036 + 22737322521 = 1019006^2 + 150789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061110550557 - 2¹⁹ = 1061110026269 is a prime.

It is a super-2 number, since 2×1061110550557² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061110550587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530555275278 + 530555275279.

It is an arithmetic number, because the mean of its divisors is an integer number (530555275279).

Almost surely, 2^{1061110550557} is an apocalyptic number.

It is an amenable number.

1061110550557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061110550557 is an equidigital number, since it uses as much as digits as its factorization.

1061110550557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26250, while the sum is 37.

The spelling of 1061110550557 in words is "one trillion, sixty-one billion, one hundred ten million, five hundred fifty thousand, five hundred fifty-seven".