100243561403535 has 64 divisors (see below), whose sum is σ = 175859621683200. Its totient is φ = 48356010046080.

The previous prime is 100243561403501. The next prime is 100243561403539. The reversal of 100243561403535 is 535304165342001.

It is a happy number.

It is not a de Polignac number, because 100243561403535 - 2¹⁶ = 100243561337999 is a prime.

It is a super-2 number, since 2×100243561403535² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100243561403539) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 669989044 + ... + 670138646.

It is an arithmetic number, because the mean of its divisors is an integer number (2747806588800).

Almost surely, 2^{100243561403535} is an apocalyptic number.

100243561403535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100243561403535 is a deficient number, since it is larger than the sum of its proper divisors (75616060279665).

100243561403535 is a wasteful number, since it uses less digits than its factorization.

100243561403535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170228.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 100243561403535 in words is "one hundred trillion, two hundred forty-three billion, five hundred sixty-one million, four hundred three thousand, five hundred thirty-five".