1161255561719 has 16 divisors (see below), whose sum is σ = 1291323897216. Its totient is φ = 1035465876000.

The previous prime is 1161255561707. The next prime is 1161255561733. The reversal of 1161255561719 is 9171655521611.

It is a cyclic number.

It is not a de Polignac number, because 1161255561719 - 2¹⁶ = 1161255496183 is a prime.

It is a super-2 number, since 2×1161255561719² (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 (1161255561769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4765397 + ... + 5003150.

It is an arithmetic number, because the mean of its divisors is an integer number (80707743576).

Almost surely, 2^{1161255561719} is an apocalyptic number.

1161255561719 is a deficient number, since it is larger than the sum of its proper divisors (130068335497).

1161255561719 is a wasteful number, since it uses less digits than its factorization.

1161255561719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768766.

The product of its digits is 567000, while the sum is 50.

The spelling of 1161255561719 in words is "one trillion, one hundred sixty-one billion, two hundred fifty-five million, five hundred sixty-one thousand, seven hundred nineteen".