11811270450 has 48 divisors (see below), whose sum is σ = 33476518080. Its totient is φ = 2699718720.

The previous prime is 11811270439. The next prime is 11811270511. The reversal of 11811270450 is 5407211811.

It is a super-2 number, since 2×11811270450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5623365 + ... + 5625464.

It is an arithmetic number, because the mean of its divisors is an integer number (697427460).

Almost surely, 2^11811270450 is an apocalyptic number.

11811270450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11811270450 is an abundant number, since it is smaller than the sum of its proper divisors (21665247630).

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

11811270450 is a wasteful number, since it uses less digits than its factorization.

11811270450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11248851 (or 11248846 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The spelling of 11811270450 in words is "eleven billion, eight hundred eleven million, two hundred seventy thousand, four hundred fifty".