1155271664514 has 16 divisors (see below), whose sum is σ = 2520592722720. Its totient is φ = 350082322560.

The previous prime is 1155271664513. The next prime is 1155271664557. The reversal of 1155271664514 is 4154661725511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1155271664513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8752057999 + ... + 8752058130.

It is an arithmetic number, because the mean of its divisors is an integer number (157537045170).

Almost surely, 2^{1155271664514} is an apocalyptic number.

1155271664514 is an abundant number, since it is smaller than the sum of its proper divisors (1365321058206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155271664514 is a wasteful number, since it uses less digits than its factorization.

1155271664514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17504116145.

The product of its digits is 1008000, while the sum is 48.

The spelling of 1155271664514 in words is "one trillion, one hundred fifty-five billion, two hundred seventy-one million, six hundred sixty-four thousand, five hundred fourteen".