11505140223420 has 24 divisors (see below), whose sum is σ = 32214392625744. Its totient is φ = 3068037392896.

The previous prime is 11505140223407. The next prime is 11505140223431. The reversal of 11505140223420 is 2432204150511.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95876168469 + ... + 95876168588.

It is an arithmetic number, because the mean of its divisors is an integer number (1342266359406).

Almost surely, 2^{11505140223420} is an apocalyptic number.

11505140223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11505140223420 is an abundant number, since it is smaller than the sum of its proper divisors (20709252402324).

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

11505140223420 is a wasteful number, since it uses less digits than its factorization.

11505140223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191752337069 (or 191752337067 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 11505140223420 its reverse (2432204150511), we get a palindrome (13937344373931).

The spelling of 11505140223420 in words is "eleven trillion, five hundred five billion, one hundred forty million, two hundred twenty-three thousand, four hundred twenty".