100728932891 has 16 divisors (see below), whose sum is σ = 106581333600. Its totient is φ = 95054201088.

The previous prime is 100728932849. The next prime is 100728932893. The reversal of 100728932891 is 198239827001.

It is not a de Polignac number, because 100728932891 - 2³⁴ = 83549063707 is a prime.

It is a super-3 number, since 3×100728932891³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (100728932893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125855 + ... + 466151.

It is an arithmetic number, because the mean of its divisors is an integer number (6661333350).

Almost surely, 2^100728932891 is an apocalyptic number.

100728932891 is a deficient number, since it is larger than the sum of its proper divisors (5852400709).

100728932891 is a wasteful number, since it uses less digits than its factorization.

100728932891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340558.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 100728932891 in words is "one hundred billion, seven hundred twenty-eight million, nine hundred thirty-two thousand, eight hundred ninety-one".