1320291998004 has 192 divisors, whose sum is σ = 3688044595200. Its totient is φ = 359661399552.

The previous prime is 1320291997979. The next prime is 1320291998021. The reversal of 1320291998004 is 4008991920231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62329087 + ... + 62350265.

It is an arithmetic number, because the mean of its divisors is an integer number (19208565600).

Almost surely, 2^{1320291998004} is an apocalyptic number.

1320291998004 is a gapful number since it is divisible by the number (14) 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 1320291998004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844022297600).

1320291998004 is an abundant number, since it is smaller than the sum of its proper divisors (2367752597196).

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

1320291998004 is a wasteful number, since it uses less digits than its factorization.

1320291998004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21542 (or 21540 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 1320291998004 in words is "one trillion, three hundred twenty billion, two hundred ninety-one million, nine hundred ninety-eight thousand, four".