1126055078581 has 4 divisors (see below), whose sum is σ = 1144514997964. Its totient is φ = 1107595159200.

The previous prime is 1126055078579. The next prime is 1126055078593. The reversal of 1126055078581 is 1858705506211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 468875715025 + 657179363556 = 684745^2 + 810666^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126055078581 - 2¹ = 1126055078579 is a prime.

It is a super-2 number, since 2×1126055078581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126055078081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9229959600 + ... + 9229959721.

It is an arithmetic number, because the mean of its divisors is an integer number (286128749491).

Almost surely, 2^{1126055078581} is an apocalyptic number.

It is an amenable number.

1126055078581 is a deficient number, since it is larger than the sum of its proper divisors (18459919383).

1126055078581 is an equidigital number, since it uses as much as digits as its factorization.

1126055078581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18459919382.

The product of its (nonzero) digits is 672000, while the sum is 49.

The spelling of 1126055078581 in words is "one trillion, one hundred twenty-six billion, fifty-five million, seventy-eight thousand, five hundred eighty-one".