100645444887 has 8 divisors (see below), whose sum is σ = 144516536304. Its totient is φ = 61935658368.

The previous prime is 100645444859. The next prime is 100645444931. The reversal of 100645444887 is 788444546001.

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

It is a de Polignac number, because none of the positive numbers 2^k-100645444887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100645444087) 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, 1290326178 + ... + 1290326255.

It is an arithmetic number, because the mean of its divisors is an integer number (18064567038).

Almost surely, 2^100645444887 is an apocalyptic number.

100645444887 is a deficient number, since it is larger than the sum of its proper divisors (43871091417).

100645444887 is a wasteful number, since it uses less digits than its factorization.

100645444887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580652449.

The product of its (nonzero) digits is 3440640, while the sum is 51.

The spelling of 100645444887 in words is "one hundred billion, six hundred forty-five million, four hundred forty-four thousand, eight hundred eighty-seven".