1155216711 has 16 divisors (see below), whose sum is σ = 1738258560. Its totient is φ = 675988320.

The previous prime is 1155216703. The next prime is 1155216731. The reversal of 1155216711 is 1176125511.

It is not a de Polignac number, because 1155216711 - 2³ = 1155216703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155216731) 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, 602605 + ... + 604518.

It is an arithmetic number, because the mean of its divisors is an integer number (108641160).

Almost surely, 2^1155216711 is an apocalyptic number.

1155216711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1155216711 is a deficient number, since it is larger than the sum of its proper divisors (583041849).

1155216711 is a wasteful number, since it uses less digits than its factorization.

1155216711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207166.

The product of its digits is 2100, while the sum is 30.

The square root of 1155216711 is about 33988.4790921865. The cubic root of 1155216711 is about 1049.2713647839.

The spelling of 1155216711 in words is "one billion, one hundred fifty-five million, two hundred sixteen thousand, seven hundred eleven".