84106213191 has 240 divisors, whose sum is σ = 171236729664. Its totient is φ = 40030848000.

The previous prime is 84106213133. The next prime is 84106213201. The reversal of 84106213191 is 19131260148.

84106213191 is a `hidden beast` number, since 8 + 4 + 10 + 621 + 3 + 19 + 1 = 666.

It is not a de Polignac number, because 84106213191 - 2⁷ = 84106213063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84106213291) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 161432011 + ... + 161432531.

Almost surely, 2^84106213191 is an apocalyptic number.

84106213191 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84106213191 is an abundant number, since it is smaller than the sum of its proper divisors (87130516473).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84106213191 is a wasteful number, since it uses less digits than its factorization.

84106213191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 84106213191 in words is "eighty-four billion, one hundred six million, two hundred thirteen thousand, one hundred ninety-one".