1979482977480 has 128 divisors (see below), whose sum is σ = 6017218099200. Its totient is φ = 520905465600.

The previous prime is 1979482977413. The next prime is 1979482977487. The reversal of 1979482977480 is 847792849791.

It is a Cunningham number, because it is equal to 1406941²-1.

It is not an unprimeable number, because it can be changed into a prime (1979482977487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2462145 + ... + 3165615.

It is an arithmetic number, because the mean of its divisors is an integer number (47009516400).

Almost surely, 2^{1979482977480} is an apocalyptic number.

1979482977480 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 1979482977480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3008609049600).

1979482977480 is an abundant number, since it is smaller than the sum of its proper divisors (4037735121720).

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

1979482977480 is a wasteful number, since it uses less digits than its factorization.

1979482977480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703795 (or 703791 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 75.

The spelling of 1979482977480 in words is "one trillion, nine hundred seventy-nine billion, four hundred eighty-two million, nine hundred seventy-seven thousand, four hundred eighty".