1980216398004 has 96 divisors (see below), whose sum is σ = 5013429025920. Its totient is φ = 604707545088.

The previous prime is 1980216397997. The next prime is 1980216398011. The reversal of 1980216398004 is 4008936120891.

It is an interprime number because it is at equal distance from previous prime (1980216397997) and next prime (1980216398011).

It is a super-2 number, since 2×1980216398004² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 123500772 + ... + 123516804.

It is an arithmetic number, because the mean of its divisors is an integer number (52223219020).

Almost surely, 2^{1980216398004} 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 1980216398004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2506714512960).

1980216398004 is an abundant number, since it is smaller than the sum of its proper divisors (3033212627916).

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

1980216398004 is a wasteful number, since it uses less digits than its factorization.

1980216398004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21969 (or 21967 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 1980216398004 in words is "one trillion, nine hundred eighty billion, two hundred sixteen million, three hundred ninety-eight thousand, four".