1205941811680 has 48 divisors (see below), whose sum is σ = 2853482449104. Its totient is φ = 481624145920.

The previous prime is 1205941811677. The next prime is 1205941811681. The reversal of 1205941811680 is 861181495021.

It is a self number, because there is not a number n which added to its sum of digits gives 1205941811680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205941811681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5776642 + ... + 5981761.

It is an arithmetic number, because the mean of its divisors is an integer number (59447551023).

Almost surely, 2^{1205941811680} is an apocalyptic number.

1205941811680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205941811680 is an abundant number, since it is smaller than the sum of its proper divisors (1647540637424).

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

1205941811680 is a wasteful number, since it uses less digits than its factorization.

1205941811680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11759059 (or 11759051 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 1205941811680 in words is "one trillion, two hundred five billion, nine hundred forty-one million, eight hundred eleven thousand, six hundred eighty".