111678455690 has 32 divisors (see below), whose sum is σ = 210314897280. Its totient is φ = 42616373184.

The previous prime is 111678455689. The next prime is 111678455753. The reversal of 111678455690 is 96554876111.

It is a super-2 number, since 2×111678455690² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553409 + ... + 727748.

It is an arithmetic number, because the mean of its divisors is an integer number (6572340540).

Almost surely, 2^111678455690 is an apocalyptic number.

111678455690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111678455690 is a deficient number, since it is larger than the sum of its proper divisors (98636441590).

111678455690 is a wasteful number, since it uses less digits than its factorization.

111678455690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281566.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 111678455690 in words is "one hundred eleven billion, six hundred seventy-eight million, four hundred fifty-five thousand, six hundred ninety".