7980154880 has 128 divisors (see below), whose sum is σ = 19534672800. Its totient is φ = 3128426496.

The previous prime is 7980154879. The next prime is 7980154883. The reversal of 7980154880 is 884510897.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980154883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8683061 + ... + 8683979.

Almost surely, 2^7980154880 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 7980154880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9767336400).

7980154880 is an abundant number, since it is smaller than the sum of its proper divisors (11554517920).

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

7980154880 is an frugal number, since it uses more digits than its factorization.

7980154880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 7980154880 is about 89331.7126221142. The cubic root of 7980154880 is about 1998.3448706513.

The spelling of 7980154880 in words is "seven billion, nine hundred eighty million, one hundred fifty-four thousand, eight hundred eighty".