84397776213 has 32 divisors (see below), whose sum is σ = 118501834752. Its totient is φ = 53325518400.

The previous prime is 84397776181. The next prime is 84397776251. The reversal of 84397776213 is 31267779348.

It is a happy number.

It is not a de Polignac number, because 84397776213 - 2⁵ = 84397776181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84397772213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7188558 + ... + 7200288.

It is an arithmetic number, because the mean of its divisors is an integer number (3703182336).

Almost surely, 2^84397776213 is an apocalyptic number.

It is an amenable number.

84397776213 is a deficient number, since it is larger than the sum of its proper divisors (34104058539).

84397776213 is a wasteful number, since it uses less digits than its factorization.

84397776213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12705.

The product of its digits is 10668672, while the sum is 57.

The spelling of 84397776213 in words is "eighty-four billion, three hundred ninety-seven million, seven hundred seventy-six thousand, two hundred thirteen".