981422916128 has 54 divisors (see below), whose sum is σ = 1959824046789. Its totient is φ = 483787636992.

The previous prime is 981422916031. The next prime is 981422916151. The reversal of 981422916128 is 821619224189.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 976910838544 + 4512077584 = 988388^2 + 67172^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=700508.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981422916128.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 409095473 + ... + 409097871.

Almost surely, 2^981422916128 is an apocalyptic number.

It is an amenable number.

981422916128 is a deficient number, since it is larger than the sum of its proper divisors (978401130661).

981422916128 is an frugal number, since it uses more digits than its factorization.

981422916128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954 (or 2474 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The spelling of 981422916128 in words is "nine hundred eighty-one billion, four hundred twenty-two million, nine hundred sixteen thousand, one hundred twenty-eight".