1994616122880 has 80 divisors (see below), whose sum is σ = 6376538442384. Its totient is φ = 531897630720.

The previous prime is 1994616122813. The next prime is 1994616122897. The reversal of 1994616122880 is 882216164991.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1994616122880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129850141 + ... + 129865500.

Almost surely, 2^{1994616122880} is an apocalyptic number.

1994616122880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1994616122880 is an abundant number, since it is smaller than the sum of its proper divisors (4381922319504).

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

1994616122880 is an equidigital number, since it uses as much as digits as its factorization.

1994616122880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259715667 (or 259715651 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 57.

The spelling of 1994616122880 in words is "one trillion, nine hundred ninety-four billion, six hundred sixteen million, one hundred twenty-two thousand, eight hundred eighty".