100504012643 has 16 divisors (see below), whose sum is σ = 101327111424. Its totient is φ = 99685404000.

The previous prime is 100504012627. The next prime is 100504012657. The reversal of 100504012643 is 346210405001.

It is a cyclic number.

It is not a de Polignac number, because 100504012643 - 2⁴ = 100504012627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100504015643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103933346 + ... + 103934312.

It is an arithmetic number, because the mean of its divisors is an integer number (6332944464).

Almost surely, 2^100504012643 is an apocalyptic number.

100504012643 is a deficient number, since it is larger than the sum of its proper divisors (823098781).

100504012643 is an equidigital number, since it uses as much as digits as its factorization.

100504012643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 100504012643 its reverse (346210405001), we get a palindrome (446714417644).

The spelling of 100504012643 in words is "one hundred billion, five hundred four million, twelve thousand, six hundred forty-three".