100554520243 has 16 divisors (see below), whose sum is σ = 107538507360. Its totient is φ = 93691293696.

The previous prime is 100554520229. The next prime is 100554520259. The reversal of 100554520243 is 342025455001.

It is a cyclic number.

It is not a de Polignac number, because 100554520243 - 2²⁹ = 100017649331 is a prime.

It is a super-2 number, since 2×100554520243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100554520273) 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 15 ways as a sum of consecutive naturals, for example, 1619671 + ... + 1680607.

It is an arithmetic number, because the mean of its divisors is an integer number (6721156710).

Almost surely, 2^100554520243 is an apocalyptic number.

100554520243 is a deficient number, since it is larger than the sum of its proper divisors (6983987117).

100554520243 is a wasteful number, since it uses less digits than its factorization.

100554520243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61926.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 100554520243 its reverse (342025455001), we get a palindrome (442579975244).

The spelling of 100554520243 in words is "one hundred billion, five hundred fifty-four million, five hundred twenty thousand, two hundred forty-three".