11156642406403 has 32 divisors (see below), whose sum is σ = 12319416023040. Its totient is φ = 10039147029120.

The previous prime is 11156642406383. The next prime is 11156642406409. The reversal of 11156642406403 is 30460424665111.

It is a de Polignac number, because none of the positive numbers 2^k-11156642406403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11156642406403.

It is not an unprimeable number, because it can be changed into a prime (11156642406409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 849893826 + ... + 849906952.

It is an arithmetic number, because the mean of its divisors is an integer number (384981750720).

Almost surely, 2^{11156642406403} is an apocalyptic number.

11156642406403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11156642406403 is a deficient number, since it is larger than the sum of its proper divisors (1162773616637).

11156642406403 is a wasteful number, since it uses less digits than its factorization.

11156642406403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18627.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 11156642406403 in words is "eleven trillion, one hundred fifty-six billion, six hundred forty-two million, four hundred six thousand, four hundred three".