1098255117855 has 16 divisors (see below), whose sum is σ = 2008237929984. Its totient is φ = 502059482400.

The previous prime is 1098255117829. The next prime is 1098255117871. The reversal of 1098255117855 is 5587115528901.

It is a happy number.

It is not a de Polignac number, because 1098255117855 - 2³⁶ = 1029535641119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1098255117795 and 1098255117804.

It is a congruent 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, 5229786171 + ... + 5229786380.

It is an arithmetic number, because the mean of its divisors is an integer number (125514870624).

Almost surely, 2^{1098255117855} is an apocalyptic number.

1098255117855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1098255117855 is a deficient number, since it is larger than the sum of its proper divisors (909982812129).

1098255117855 is a wasteful number, since it uses less digits than its factorization.

1098255117855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10459572566.

The product of its (nonzero) digits is 5040000, while the sum is 57.

The spelling of 1098255117855 in words is "one trillion, ninety-eight billion, two hundred fifty-five million, one hundred seventeen thousand, eight hundred fifty-five".