11156342454 has 12 divisors (see below), whose sum is σ = 24172075356. Its totient is φ = 3718780812.

The previous prime is 11156342447. The next prime is 11156342459. The reversal of 11156342454 is 45424365111.

11156342454 is a `hidden beast` number, since 1 + 1 + 1 + 563 + 42 + 4 + 54 = 666.

11156342454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156342459) 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 5 ways as a sum of consecutive naturals, for example, 309898384 + ... + 309898419.

It is an arithmetic number, because the mean of its divisors is an integer number (2014339613).

Almost surely, 2^11156342454 is an apocalyptic number.

11156342454 is an abundant number, since it is smaller than the sum of its proper divisors (13015732902).

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

11156342454 is a wasteful number, since it uses less digits than its factorization.

11156342454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619796811 (or 619796808 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 11156342454 in words is "eleven billion, one hundred fifty-six million, three hundred forty-two thousand, four hundred fifty-four".