532500786981 has 12 divisors (see below), whose sum is σ = 770836286220. Its totient is φ = 354230455680.

The previous prime is 532500786977. The next prime is 532500786997. The reversal of 532500786981 is 189687005235.

532500786981 is a `hidden beast` number, since 5 + 3 + 2 + 500 + 78 + 69 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 94700214756 + 437800572225 = 307734^2 + 661665^2 .

It is not a de Polignac number, because 532500786981 - 2² = 532500786977 is a prime.

It is a super-2 number, since 2×532500786981² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532500787981) 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, 64168036 + ... + 64176333.

It is an arithmetic number, because the mean of its divisors is an integer number (64236357185).

Almost surely, 2^532500786981 is an apocalyptic number.

It is an amenable number.

532500786981 is a deficient number, since it is larger than the sum of its proper divisors (238335499239).

532500786981 is a wasteful number, since it uses less digits than its factorization.

532500786981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128344836 (or 128344833 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 532500786981 in words is "five hundred thirty-two billion, five hundred million, seven hundred eighty-six thousand, nine hundred eighty-one".