1204357861980 has 480 divisors, whose sum is σ = 4667818788864. Its totient is φ = 253131941376.

The previous prime is 1204357861961. The next prime is 1204357861997. The reversal of 1204357861980 is 891687534021.

1204357861980 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 3 + 578 + 61 + 9 + 8 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 38755929 + ... + 38786991.

It is a 2-persistent number, because it is pandigital, and so is 2⋅1204357861980 = 2408715723960, but 3⋅1204357861980 = 3613073585940 is not.

Almost surely, 2^{1204357861980} is an apocalyptic number.

1204357861980 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 1204357861980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2333909394432).

1204357861980 is an abundant number, since it is smaller than the sum of its proper divisors (3463460926884).

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

1204357861980 is a wasteful number, since it uses less digits than its factorization.

1204357861980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31367 (or 31356 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1204357861980 in words is "one trillion, two hundred four billion, three hundred fifty-seven million, eight hundred sixty-one thousand, nine hundred eighty".