10887161820 has 24 divisors (see below), whose sum is σ = 30484053264. Its totient is φ = 2903243136.

The previous prime is 10887161809. The next prime is 10887161821. The reversal of 10887161820 is 2816178801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10887161821) 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 7 ways as a sum of consecutive naturals, for example, 90726289 + ... + 90726408.

It is an arithmetic number, because the mean of its divisors is an integer number (1270168886).

Almost surely, 2^10887161820 is an apocalyptic number.

10887161820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10887161820 is an abundant number, since it is smaller than the sum of its proper divisors (19596891444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10887161820 is a wasteful number, since it uses less digits than its factorization.

10887161820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181452709 (or 181452707 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 42.

The spelling of 10887161820 in words is "ten billion, eight hundred eighty-seven million, one hundred sixty-one thousand, eight hundred twenty".