1126666661501 has 2 divisors, whose sum is σ = 1126666661502. Its totient is φ = 1126666661500.

The previous prime is 1126666661453. The next prime is 1126666661537. The reversal of 1126666661501 is 1051666666211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 878533164601 + 248133496900 = 937301^2 + 498130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126666661501 - 2³⁰ = 1125592919677 is a prime.

It is a super-2 number, since 2×1126666661501² (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 (1126666661801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563333330750 + 563333330751.

It is an arithmetic number, because the mean of its divisors is an integer number (563333330751).

Almost surely, 2^{1126666661501} is an apocalyptic number.

It is an amenable number.

1126666661501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126666661501 is an equidigital number, since it uses as much as digits as its factorization.

1126666661501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 1126666661501 in words is "one trillion, one hundred twenty-six billion, six hundred sixty-six million, six hundred sixty-one thousand, five hundred one".