1098905368890 has 128 divisors (see below), whose sum is σ = 3077452320768. Its totient is φ = 245947299840.

The previous prime is 1098905368871. The next prime is 1098905368921. The reversal of 1098905368890 is 988635098901.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2115850 + ... + 2583530.

It is an arithmetic number, because the mean of its divisors is an integer number (24042596256).

Almost surely, 2^{1098905368890} is an apocalyptic number.

1098905368890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098905368890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538726160384).

1098905368890 is an abundant number, since it is smaller than the sum of its proper divisors (1978546951878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098905368890 is a wasteful number, since it uses less digits than its factorization.

1098905368890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467932.

The product of its (nonzero) digits is 33592320, while the sum is 66.

The spelling of 1098905368890 in words is "one trillion, ninety-eight billion, nine hundred five million, three hundred sixty-eight thousand, eight hundred ninety".