1181516053617 has 6 divisors (see below), whose sum is σ = 1706634299682. Its totient is φ = 787677369072.

The previous prime is 1181516053589. The next prime is 1181516053631. The reversal of 1181516053617 is 7163506151811.

1181516053617 is a `hidden beast` number, since 1 + 1 + 8 + 1 + 5 + 1 + 605 + 36 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1083699738081 + 97816315536 = 1041009^2 + 312756^2 .

It is not a de Polignac number, because 1181516053617 - 2¹⁹ = 1181515529329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1181516053687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65639780748 + ... + 65639780765.

It is an arithmetic number, because the mean of its divisors is an integer number (284439049947).

Almost surely, 2^{1181516053617} is an apocalyptic number.

It is an amenable number.

1181516053617 is a deficient number, since it is larger than the sum of its proper divisors (525118246065).

1181516053617 is a wasteful number, since it uses less digits than its factorization.

1181516053617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131279561519 (or 131279561516 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 1181516053617 in words is "one trillion, one hundred eighty-one billion, five hundred sixteen million, fifty-three thousand, six hundred seventeen".