1298098861560 has 96 divisors (see below), whose sum is σ = 4269650570640. Its totient is φ = 341989089792.

The previous prime is 1298098861483. The next prime is 1298098861583. The reversal of 1298098861560 is 651688908921.

1298098861560 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 0 + 9 + 8 + 8 + 61 + 560 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21691989 + ... + 21751748.

Almost surely, 2^{1298098861560} is an apocalyptic number.

1298098861560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298098861560 is an abundant number, since it is smaller than the sum of its proper divisors (2971551709080).

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

1298098861560 is a wasteful number, since it uses less digits than its factorization.

1298098861560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43443837 (or 43443830 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 1298098861560 in words is "one trillion, two hundred ninety-eight billion, ninety-eight million, eight hundred sixty-one thousand, five hundred sixty".