10611116557 has 2 divisors, whose sum is σ = 10611116558. Its totient is φ = 10611116556.

The previous prime is 10611116543. The next prime is 10611116563. The reversal of 10611116557 is 75561111601.

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., 8677667716 + 1933448841 = 93154^2 + 43971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10611116557 is a prime.

It is a super-2 number, since 2×10611116557² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10611116567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305558278 + 5305558279.

It is an arithmetic number, because the mean of its divisors is an integer number (5305558279).

Almost surely, 2^10611116557 is an apocalyptic number.

It is an amenable number.

10611116557 is a deficient number, since it is larger than the sum of its proper divisors (1).

10611116557 is an equidigital number, since it uses as much as digits as its factorization.

10611116557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 10611116557 in words is "ten billion, six hundred eleven million, one hundred sixteen thousand, five hundred fifty-seven".