10991472210 has 96 divisors (see below), whose sum is σ = 28780697088. Its totient is φ = 2910337920.

The previous prime is 10991472137. The next prime is 10991472287. The reversal of 10991472210 is 1227419901.

It is a super-2 number, since 2×10991472210² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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, 9964519 + ... + 9965621.

It is an arithmetic number, because the mean of its divisors is an integer number (299798928).

Almost surely, 2^10991472210 is an apocalyptic number.

10991472210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10991472210 is an abundant number, since it is smaller than the sum of its proper divisors (17789224878).

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

10991472210 is a wasteful number, since it uses less digits than its factorization.

10991472210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1797 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 10991472210 in words is "ten billion, nine hundred ninety-one million, four hundred seventy-two thousand, two hundred ten".