1209546910848 has 128 divisors (see below), whose sum is σ = 3256270848000. Its totient is φ = 397770089472.

The previous prime is 1209546910837. The next prime is 1209546910867. The reversal of 1209546910848 is 8480196459021.

It is a tau number, because it is divible by the number of its divisors (128).

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, 8660193 + ... + 8798751.

It is an arithmetic number, because the mean of its divisors is an integer number (25439616000).

Almost surely, 2^{1209546910848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1209546910848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628135424000).

1209546910848 is an abundant number, since it is smaller than the sum of its proper divisors (2046723937152).

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

1209546910848 is a wasteful number, since it uses less digits than its factorization.

1209546910848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138882 (or 138870 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 1209546910848 in words is "one trillion, two hundred nine billion, five hundred forty-six million, nine hundred ten thousand, eight hundred forty-eight".