1976821414040 has 128 divisors (see below), whose sum is σ = 4980528000000. Its totient is φ = 699902745600.

The previous prime is 1976821414027. The next prime is 1976821414133. The reversal of 1976821414040 is 404141286791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8892161 + ... + 9111759.

It is an arithmetic number, because the mean of its divisors is an integer number (38910375000).

Almost surely, 2^{1976821414040} is an apocalyptic number.

1976821414040 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 1976821414040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490264000000).

1976821414040 is an abundant number, since it is smaller than the sum of its proper divisors (3003706585960).

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

1976821414040 is a wasteful number, since it uses less digits than its factorization.

1976821414040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220161 (or 220157 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 1976821414040 in words is "one trillion, nine hundred seventy-six billion, eight hundred twenty-one million, four hundred fourteen thousand, forty".