537981122898 has 162 divisors, whose sum is σ = 1281255893541. Its totient is φ = 169384654656.

The previous prime is 537981122891. The next prime is 537981122941. The reversal of 537981122898 is 898221189735.

537981122898 is a `hidden beast` number, since 537 + 9 + 8 + 1 + 1 + 2 + 2 + 8 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 507737478249 + 30243644649 = 712557^2 + 173907^2 .

It is a tau number, because it is divible by the number of its divisors (162).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=518643.

It is not an unprimeable number, because it can be changed into a prime (537981122891) 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 in 80 ways as a sum of consecutive naturals, for example, 1596382986 + ... + 1596383322.

Almost surely, 2^537981122898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537981122898

537981122898 is an abundant number, since it is smaller than the sum of its proper divisors (743274770643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

537981122898 is an frugal number, since it uses more digits than its factorization.

537981122898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 361 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The spelling of 537981122898 in words is "five hundred thirty-seven billion, nine hundred eighty-one million, one hundred twenty-two thousand, eight hundred ninety-eight".