11171887837 has 16 divisors (see below), whose sum is σ = 12306974400. Its totient is φ = 10057132800.

The previous prime is 11171887823. The next prime is 11171887847. The reversal of 11171887837 is 73878817111.

It is not a de Polignac number, because 11171887837 - 2¹⁹ = 11171363549 is a prime.

It is a super-2 number, since 2×11171887837² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11171887817) 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, 532213 + ... + 552805.

It is an arithmetic number, because the mean of its divisors is an integer number (769185900).

Almost surely, 2^11171887837 is an apocalyptic number.

It is an amenable number.

11171887837 is a deficient number, since it is larger than the sum of its proper divisors (1135086563).

11171887837 is a wasteful number, since it uses less digits than its factorization.

11171887837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21084.

The product of its digits is 526848, while the sum is 52.

The spelling of 11171887837 in words is "eleven billion, one hundred seventy-one million, eight hundred eighty-seven thousand, eight hundred thirty-seven".