1118321893855 has 32 divisors (see below), whose sum is σ = 1502419968000. Its totient is φ = 794135757312.

The previous prime is 1118321893837. The next prime is 1118321893859. The reversal of 1118321893855 is 5583981238111.

It is a cyclic number.

It is not a de Polignac number, because 1118321893855 - 2¹⁷ = 1118321762783 is a prime.

It is a super-2 number, since 2×1118321893855² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1118321893796 and 1118321893805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118321893859) 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, 1192455 + ... + 1912744.

It is an arithmetic number, because the mean of its divisors is an integer number (46950624000).

Almost surely, 2^{1118321893855} is an apocalyptic number.

1118321893855 is a deficient number, since it is larger than the sum of its proper divisors (384098074145).

1118321893855 is a wasteful number, since it uses less digits than its factorization.

1118321893855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105463.

The product of its digits is 2073600, while the sum is 55.

The spelling of 1118321893855 in words is "one trillion, one hundred eighteen billion, three hundred twenty-one million, eight hundred ninety-three thousand, eight hundred fifty-five".