884977520981 has 2 divisors, whose sum is σ = 884977520982. Its totient is φ = 884977520980.

The previous prime is 884977520953. The next prime is 884977521011. The reversal of 884977520981 is 189025779488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 526446020356 + 358531500625 = 725566^2 + 598775^2 .

It is a cyclic number.

It is not a de Polignac number, because 884977520981 - 2³⁴ = 867797651797 is a prime.

It is a super-2 number, since 2×884977520981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (884977520951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442488760490 + 442488760491.

It is an arithmetic number, because the mean of its divisors is an integer number (442488760491).

Almost surely, 2^884977520981 is an apocalyptic number.

It is an amenable number.

884977520981 is a deficient number, since it is larger than the sum of its proper divisors (1).

884977520981 is an equidigital number, since it uses as much as digits as its factorization.

884977520981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 68.

The spelling of 884977520981 in words is "eight hundred eighty-four billion, nine hundred seventy-seven million, five hundred twenty thousand, nine hundred eighty-one".