11151621423 has 12 divisors (see below), whose sum is σ = 16109194920. Its totient is φ = 7433815536.

The previous prime is 11151621421. The next prime is 11151621431. The reversal of 11151621423 is 32412615111.

11151621423 is a `hidden beast` number, since 1 + 1 + 1 + 516 + 2 + 142 + 3 = 666.

11151621423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11151621423 - 2¹ = 11151621421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151621421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88168 + ... + 173426.

It is an arithmetic number, because the mean of its divisors is an integer number (1342432910).

Almost surely, 2^11151621423 is an apocalyptic number.

11151621423 is a deficient number, since it is larger than the sum of its proper divisors (4957573497).

11151621423 is a wasteful number, since it uses less digits than its factorization.

11151621423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99798 (or 99795 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The spelling of 11151621423 in words is "eleven billion, one hundred fifty-one million, six hundred twenty-one thousand, four hundred twenty-three".