1213598842560 has 1344 divisors, whose sum is σ = 4859235717120. Its totient is φ = 288222105600.

The previous prime is 1213598842549. The next prime is 1213598842597. The reversal of 1213598842560 is 652488953121.

1213598842560 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 598 + 8 + 42 + 5 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1213598842497 and 1213598842506.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3666461595 + ... + 3666461925.

Almost surely, 2^{1213598842560} is an apocalyptic number.

1213598842560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213598842560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2429617858560).

1213598842560 is an abundant number, since it is smaller than the sum of its proper divisors (3645636874560).

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

1213598842560 is an equidigital number, since it uses as much as digits as its factorization.

1213598842560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 1213598842560 in words is "one trillion, two hundred thirteen billion, five hundred ninety-eight million, eight hundred forty-two thousand, five hundred sixty".