100554111243 has 24 divisors (see below), whose sum is σ = 147586374000. Its totient is φ = 65963772864.

The previous prime is 100554111211. The next prime is 100554111247. The reversal of 100554111243 is 342111455001.

100554111243 is a `hidden beast` number, since 1 + 0 + 0 + 5 + 5 + 411 + 1 + 243 = 666.

It is not a de Polignac number, because 100554111243 - 2⁵ = 100554111211 is a prime.

It is a super-2 number, since 2×100554111243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100554111247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206908 + ... + 493881.

It is an arithmetic number, because the mean of its divisors is an integer number (6149432250).

Almost surely, 2^100554111243 is an apocalyptic number.

100554111243 is a deficient number, since it is larger than the sum of its proper divisors (47032262757).

100554111243 is a wasteful number, since it uses less digits than its factorization.

100554111243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701051 (or 701048 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 100554111243 its reverse (342111455001), we get a palindrome (442665566244).

The spelling of 100554111243 in words is "one hundred billion, five hundred fifty-four million, one hundred eleven thousand, two hundred forty-three".