7980816502 has 4 divisors (see below), whose sum is σ = 11971224756. Its totient is φ = 3990408250.

The previous prime is 7980816499. The next prime is 7980816509. The reversal of 7980816502 is 2056180897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2056180897 = 499 ⋅4120603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980816509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1995204124 + ... + 1995204127.

It is an arithmetic number, because the mean of its divisors is an integer number (2992806189).

Almost surely, 2^7980816502 is an apocalyptic number.

7980816502 is a deficient number, since it is larger than the sum of its proper divisors (3990408254).

7980816502 is a wasteful number, since it uses less digits than its factorization.

7980816502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990408253.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 7980816502 is about 89335.4157207543. The cubic root of 7980816502 is about 1998.4000956610.

The spelling of 7980816502 in words is "seven billion, nine hundred eighty million, eight hundred sixteen thousand, five hundred two".