100042655643 has 24 divisors (see below), whose sum is σ = 166784937696. Its totient is φ = 56601216000.

The previous prime is 100042655639. The next prime is 100042655659. The reversal of 100042655643 is 346556240001.

100042655643 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 4 + 2 + 6 + 5 + 5 + 643 = 666.

It is not a de Polignac number, because 100042655643 - 2² = 100042655639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100042655598 and 100042655607.

It is not an unprimeable number, because it can be changed into a prime (100042655623) 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 23 ways as a sum of consecutive naturals, for example, 7854918 + ... + 7867643.

It is an arithmetic number, because the mean of its divisors is an integer number (6949372404).

Almost surely, 2^100042655643 is an apocalyptic number.

100042655643 is a deficient number, since it is larger than the sum of its proper divisors (66742282053).

100042655643 is a wasteful number, since it uses less digits than its factorization.

100042655643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722675 (or 15722672 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 100042655643 its reverse (346556240001), we get a palindrome (446598895644).

The spelling of 100042655643 in words is "one hundred billion, forty-two million, six hundred fifty-five thousand, six hundred forty-three".