1996427126880 has 480 divisors, whose sum is σ = 7325581032000. Its totient is φ = 511420428288.

The previous prime is 1996427126861. The next prime is 1996427126989. The reversal of 1996427126880 is 886217246991.

1996427126880 is a `hidden beast` number, since 1 + 9 + 9 + 6 + 427 + 126 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 74778814 + ... + 74805506.

It is an arithmetic number, because the mean of its divisors is an integer number (15261627150).

Almost surely, 2^{1996427126880} is an apocalyptic number.

1996427126880 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 1996427126880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3662790516000).

1996427126880 is an abundant number, since it is smaller than the sum of its proper divisors (5329153905120).

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

1996427126880 is a wasteful number, since it uses less digits than its factorization.

1996427126880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26948 (or 26931 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 1996427126880 in words is "one trillion, nine hundred ninety-six billion, four hundred twenty-seven million, one hundred twenty-six thousand, eight hundred eighty".