111771999993 has 8 divisors (see below), whose sum is σ = 157795764768. Its totient is φ = 70131450944.

The previous prime is 111771999961. The next prime is 111772000003. The reversal of 111771999993 is 399999177111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111771999993 - 2⁵ = 111771999961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111771999953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095803871 + ... + 1095803972.

It is an arithmetic number, because the mean of its divisors is an integer number (19724470596).

Almost surely, 2^111771999993 is an apocalyptic number.

It is an amenable number.

111771999993 is a deficient number, since it is larger than the sum of its proper divisors (46023764775).

111771999993 is a wasteful number, since it uses less digits than its factorization.

111771999993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191607863.

The product of its digits is 8680203, while the sum is 66.

The spelling of 111771999993 in words is "one hundred eleven billion, seven hundred seventy-one million, nine hundred ninety-nine thousand, nine hundred ninety-three".