1155117064487 has 16 divisors (see below), whose sum is σ = 1219793007360. Its totient is φ = 1090831110912.

The previous prime is 1155117064433. The next prime is 1155117064511. The reversal of 1155117064487 is 7844607115511.

It is a cyclic number.

It is not a de Polignac number, because 1155117064487 - 2²² = 1155112870183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155117064687) 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, 22806263 + ... + 22856855.

It is an arithmetic number, because the mean of its divisors is an integer number (76237062960).

Almost surely, 2^{1155117064487} is an apocalyptic number.

1155117064487 is a deficient number, since it is larger than the sum of its proper divisors (64675942873).

1155117064487 is a wasteful number, since it uses less digits than its factorization.

1155117064487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54422.

The product of its (nonzero) digits is 940800, while the sum is 50.

The spelling of 1155117064487 in words is "one trillion, one hundred fifty-five billion, one hundred seventeen million, sixty-four thousand, four hundred eighty-seven".