100643366542 has 16 divisors (see below), whose sum is σ = 154437061680. Its totient is φ = 49176994752.

The previous prime is 100643366513. The next prime is 100643366569. The reversal of 100643366542 is 245663346001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100643366495 and 100643366504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3146188 + ... + 3178015.

It is an arithmetic number, because the mean of its divisors is an integer number (9652316355).

Almost surely, 2^100643366542 is an apocalyptic number.

100643366542 is a deficient number, since it is larger than the sum of its proper divisors (53793695138).

100643366542 is a wasteful number, since it uses less digits than its factorization.

100643366542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324387.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 100643366542 in words is "one hundred billion, six hundred forty-three million, three hundred sixty-six thousand, five hundred forty-two".