2981398881508 has 24 divisors (see below), whose sum is σ = 5395319112960. Its totient is φ = 1440049961760.

The previous prime is 2981398881491. The next prime is 2981398881551. The reversal of 2981398881508 is 8051888931892.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 21283243 + ... + 21422866.

It is an arithmetic number, because the mean of its divisors is an integer number (224804963040).

Almost surely, 2^{2981398881508} is an apocalyptic number.

It is an amenable number.

2981398881508 is a deficient number, since it is larger than the sum of its proper divisors (2413920231452).

2981398881508 is a wasteful number, since it uses less digits than its factorization.

2981398881508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42706707 (or 42706705 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 70.

The spelling of 2981398881508 in words is "two trillion, nine hundred eighty-one billion, three hundred ninety-eight million, eight hundred eighty-one thousand, five hundred eight".