111356443641015 has 32 divisors (see below), whose sum is σ = 198839112341760. Its totient is φ = 59128472848032.

The previous prime is 111356443641011. The next prime is 111356443641031. The reversal of 111356443641015 is 510146344653111.

It is a happy number.

111356443641015 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 564 + 4 + 3 + 64 + 10 + 15 = 666.

It is not a de Polignac number, because 111356443641015 - 2² = 111356443641011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111356443641011) 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, 1816847209 + ... + 1816908498.

It is an arithmetic number, because the mean of its divisors is an integer number (6213722260680).

Almost surely, 2^{111356443641015} is an apocalyptic number.

111356443641015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111356443641015 is a deficient number, since it is larger than the sum of its proper divisors (87482668700745).

111356443641015 is a wasteful number, since it uses less digits than its factorization.

111356443641015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633755948 (or 3633755942 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 111356443641015 in words is "one hundred eleven trillion, three hundred fifty-six billion, four hundred forty-three million, six hundred forty-one thousand, fifteen".