1024839225981 has 12 divisors (see below), whose sum is σ = 1485826390620. Its totient is φ = 680686274880.

The previous prime is 1024839225887. The next prime is 1024839226051. The reversal of 1024839225981 is 1895229384201.

1024839225981 is a `hidden beast` number, since 1 + 0 + 2 + 48 + 3 + 9 + 2 + 2 + 598 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 471762922500 + 553076303481 = 686850^2 + 743691^2 .

It is not a de Polignac number, because 1024839225981 - 2⁹ = 1024839225469 is a prime.

It is a super-2 number, since 2×1024839225981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024839025981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211653760 + ... + 211658601.

It is an arithmetic number, because the mean of its divisors is an integer number (123818865885).

Almost surely, 2^{1024839225981} is an apocalyptic number.

It is an amenable number.

1024839225981 is a deficient number, since it is larger than the sum of its proper divisors (460987164639).

1024839225981 is a wasteful number, since it uses less digits than its factorization.

1024839225981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423312636 (or 423312633 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1024839225981 in words is "one trillion, twenty-four billion, eight hundred thirty-nine million, two hundred twenty-five thousand, nine hundred eighty-one".