100778189321 has 8 divisors (see below), whose sum is σ = 101184310080. Its totient is φ = 100372302288.

The previous prime is 100778189299. The next prime is 100778189327. The reversal of 100778189321 is 123981877001.

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

It is a cyclic number.

It is not a de Polignac number, because 100778189321 - 2²² = 100773995017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100778189327) 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, 832940 + ... + 946226.

It is an arithmetic number, because the mean of its divisors is an integer number (12648038760).

Almost surely, 2^100778189321 is an apocalyptic number.

It is an amenable number.

100778189321 is a deficient number, since it is larger than the sum of its proper divisors (406120759).

100778189321 is a wasteful number, since it uses less digits than its factorization.

100778189321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116863.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 100778189321 in words is "one hundred billion, seven hundred seventy-eight million, one hundred eighty-nine thousand, three hundred twenty-one".