84202068891 has 16 divisors (see below), whose sum is σ = 117299637504. Its totient is φ = 53625812064.

The previous prime is 84202068889. The next prime is 84202068911. The reversal of 84202068891 is 19886020248.

It is not a de Polignac number, because 84202068891 - 2¹ = 84202068889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84202068891.

It is not an unprimeable number, because it can be changed into a prime (84202068851) 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, 720996 + ... + 829601.

It is an arithmetic number, because the mean of its divisors is an integer number (7331227344).

Almost surely, 2^84202068891 is an apocalyptic number.

84202068891 is a deficient number, since it is larger than the sum of its proper divisors (33097568613).

84202068891 is a wasteful number, since it uses less digits than its factorization.

84202068891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551410.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 84202068891 in words is "eighty-four billion, two hundred two million, sixty-eight thousand, eight hundred ninety-one".