1155166015643 has 4 divisors (see below), whose sum is σ = 1155281093520. Its totient is φ = 1155050937768.

The previous prime is 1155166015621. The next prime is 1155166015657. The reversal of 1155166015643 is 3465106615511.

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

It is a cyclic number.

It is not a de Polignac number, because 1155166015643 - 2⁸ = 1155166015387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1155166015594 and 1155166015603.

It is not an unprimeable number, because it can be changed into a prime (1155166015243) 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, 57523880 + ... + 57543957.

It is an arithmetic number, because the mean of its divisors is an integer number (288820273380).

Almost surely, 2^{1155166015643} is an apocalyptic number.

1155166015643 is a deficient number, since it is larger than the sum of its proper divisors (115077877).

1155166015643 is a wasteful number, since it uses less digits than its factorization.

1155166015643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115077876.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 1155166015643 in words is "one trillion, one hundred fifty-five billion, one hundred sixty-six million, fifteen thousand, six hundred forty-three".