84921100845 has 16 divisors (see below), whose sum is σ = 155284298880. Its totient is φ = 38821074624.

The previous prime is 84921100811. The next prime is 84921100861. The reversal of 84921100845 is 54800112948.

It is not a de Polignac number, because 84921100845 - 2²² = 84916906541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84921100797 and 84921100806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404386090 + ... + 404386299.

It is an arithmetic number, because the mean of its divisors is an integer number (9705268680).

Almost surely, 2^84921100845 is an apocalyptic number.

It is an amenable number.

84921100845 is a deficient number, since it is larger than the sum of its proper divisors (70363198035).

84921100845 is a wasteful number, since it uses less digits than its factorization.

84921100845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808772404.

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 84921100845 in words is "eighty-four billion, nine hundred twenty-one million, one hundred thousand, eight hundred forty-five".