111443199990 has 16 divisors (see below), whose sum is σ = 267463680048. Its totient is φ = 29718186656.

The previous prime is 111443199977. The next prime is 111443200003. The reversal of 111443199990 is 99991344111.

It is an interprime number because it is at equal distance from previous prime (111443199977) and next prime (111443200003).

It is a super-2 number, since 2×111443199990² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1857386637 + ... + 1857386696.

It is an arithmetic number, because the mean of its divisors is an integer number (16716480003).

Almost surely, 2^111443199990 is an apocalyptic number.

111443199990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111443199990 is an abundant number, since it is smaller than the sum of its proper divisors (156020480058).

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

111443199990 is a wasteful number, since it uses less digits than its factorization.

111443199990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714773343.

The product of its (nonzero) digits is 314928, while the sum is 51.

The spelling of 111443199990 in words is "one hundred eleven billion, four hundred forty-three million, one hundred ninety-nine thousand, nine hundred ninety".