11172829381 has 16 divisors (see below), whose sum is σ = 13185187840. Its totient is φ = 9264734640.

The previous prime is 11172829337. The next prime is 11172829387. The reversal of 11172829381 is 18392827111.

It is not a de Polignac number, because 11172829381 - 2²¹ = 11170732229 is a prime.

It is a super-2 number, since 2×11172829381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172829387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854350 + ... + 867328.

It is an arithmetic number, because the mean of its divisors is an integer number (824074240).

Almost surely, 2^11172829381 is an apocalyptic number.

It is an amenable number.

11172829381 is a deficient number, since it is larger than the sum of its proper divisors (2012358459).

11172829381 is a wasteful number, since it uses less digits than its factorization.

11172829381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16984.

The product of its digits is 48384, while the sum is 43.

The spelling of 11172829381 in words is "eleven billion, one hundred seventy-two million, eight hundred twenty-nine thousand, three hundred eighty-one".