111543591401 has 4 divisors (see below), whose sum is σ = 121683917904. Its totient is φ = 101403264900.

The previous prime is 111543591391. The next prime is 111543591491. The reversal of 111543591401 is 104195345111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111543591401 - 2⁶ = 111543591337 is a prime.

It is a super-2 number, since 2×111543591401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111543591491) 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 3 ways as a sum of consecutive naturals, for example, 5070163235 + ... + 5070163256.

It is an arithmetic number, because the mean of its divisors is an integer number (30420979476).

Almost surely, 2^111543591401 is an apocalyptic number.

111543591401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111543591401 is a deficient number, since it is larger than the sum of its proper divisors (10140326503).

111543591401 is a wasteful number, since it uses less digits than its factorization.

111543591401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140326502.

The product of its (nonzero) digits is 10800, while the sum is 35.

The spelling of 111543591401 in words is "one hundred eleven billion, five hundred forty-three million, five hundred ninety-one thousand, four hundred one".