100326045331521 has 15 divisors (see below), whose sum is σ = 149869906084723. Its totient is φ = 66883970123280.

The previous prime is 100326045331433. The next prime is 100326045331531. The reversal of 100326045331521 is 125133540623001.

The square root of 100326045331521 is 10016289.

It is a perfect power (a square), and thus also a powerful number.

100326045331521 is a `hidden beast` number, since 1 + 0 + 0 + 3 + 2 + 60 + 45 + 3 + 31 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10866984773121 + 89459060558400 = 3296511^2 + 9458280^2 .

It is not a de Polignac number, because 100326045331521 - 2⁹ = 100326045331009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100326045331531) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 89590141 + ... + 90703061.

Almost surely, 2^{100326045331521} is an apocalyptic number.

100326045331521 is the 10016289-th square number.

100326045331521 is the 5008145-th centered octagonal number.

It is an amenable number.

100326045331521 is a deficient number, since it is larger than the sum of its proper divisors (49543860753202).

100326045331521 is an frugal number, since it uses more digits than its factorization.

100326045331521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225854 (or 1112924 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 100326045331521 its reverse (125133540623001), we get a palindrome (225459585954522).

The spelling of 100326045331521 in words is "one hundred trillion, three hundred twenty-six billion, forty-five million, three hundred thirty-one thousand, five hundred twenty-one".