100554430144543 has 4 divisors (see below), whose sum is σ = 100623730235688. Its totient is φ = 100485130053400.

The previous prime is 100554430144523. The next prime is 100554430144561. The reversal of 100554430144543 is 345441034455001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100554430144543 - 2²¹ = 100554428047391 is a prime.

It is a super-2 number, since 2×100554430144543² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100554430144543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100554430144523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34650043396 + ... + 34650046297.

It is an arithmetic number, because the mean of its divisors is an integer number (25155932558922).

Almost surely, 2^{100554430144543} is an apocalyptic number.

100554430144543 is a deficient number, since it is larger than the sum of its proper divisors (69300091145).

100554430144543 is an equidigital number, since it uses as much as digits as its factorization.

100554430144543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69300091144.

The product of its (nonzero) digits is 1152000, while the sum is 43.

Adding to 100554430144543 its reverse (345441034455001), we get a palindrome (445995464599544).

The spelling of 100554430144543 in words is "one hundred trillion, five hundred fifty-four billion, four hundred thirty million, one hundred forty-four thousand, five hundred forty-three".