100042561026543 has 8 divisors (see below), whose sum is σ = 137692987219456. Its totient is φ = 64543587759000.

The previous prime is 100042561026523. The next prime is 100042561026559. The reversal of 100042561026543 is 345620165240001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100042561026543 - 2⁶ = 100042561026479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100042561026523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537863231233 + ... + 537863231418.

It is an arithmetic number, because the mean of its divisors is an integer number (17211623402432).

Almost surely, 2^{100042561026543} is an apocalyptic number.

100042561026543 is a deficient number, since it is larger than the sum of its proper divisors (37650426192913).

100042561026543 is a wasteful number, since it uses less digits than its factorization.

100042561026543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075726462685.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 100042561026543 in words is "one hundred trillion, forty-two billion, five hundred sixty-one million, twenty-six thousand, five hundred forty-three".