1091711255215 has 48 divisors (see below), whose sum is σ = 1533678753600. Its totient is φ = 743821596672.

The previous prime is 1091711255191. The next prime is 1091711255221. The reversal of 1091711255215 is 5125521171901.

It is not a de Polignac number, because 1091711255215 - 2¹⁹ = 1091710730927 is a prime.

It is a super-2 number, since 2×1091711255215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163206591 + ... + 163213279.

It is an arithmetic number, because the mean of its divisors is an integer number (31951640700).

Almost surely, 2^{1091711255215} is an apocalyptic number.

1091711255215 is a deficient number, since it is larger than the sum of its proper divisors (441967498385).

1091711255215 is a wasteful number, since it uses less digits than its factorization.

1091711255215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10864 (or 10857 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 40.

The spelling of 1091711255215 in words is "one trillion, ninety-one billion, seven hundred eleven million, two hundred fifty-five thousand, two hundred fifteen".