11071855993 has 4 divisors (see below), whose sum is σ = 12078388368. Its totient is φ = 10065323620.

The previous prime is 11071855967. The next prime is 11071856009. The reversal of 11071855993 is 39955817011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39955817011 = 11 ⋅3632347001.

It is not a de Polignac number, because 11071855993 - 2¹⁷ = 11071724921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11071855493) 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, 503266171 + ... + 503266192.

It is an arithmetic number, because the mean of its divisors is an integer number (3019597092).

Almost surely, 2^11071855993 is an apocalyptic number.

It is an amenable number.

11071855993 is a deficient number, since it is larger than the sum of its proper divisors (1006532375).

11071855993 is a wasteful number, since it uses less digits than its factorization.

11071855993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006532374.

The product of its (nonzero) digits is 340200, while the sum is 49.

The spelling of 11071855993 in words is "eleven billion, seventy-one million, eight hundred fifty-five thousand, nine hundred ninety-three".