84170834213 has 4 divisors (see below), whose sum is σ = 84221449728. Its totient is φ = 84120218700.

The previous prime is 84170834183. The next prime is 84170834221. The reversal of 84170834213 is 31243807148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84170834213 - 2⁶ = 84170834149 is a prime.

It is a super-2 number, since 2×84170834213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84170834413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25305263 + ... + 25308588.

It is an arithmetic number, because the mean of its divisors is an integer number (21055362432).

Almost surely, 2^84170834213 is an apocalyptic number.

It is an amenable number.

84170834213 is a deficient number, since it is larger than the sum of its proper divisors (50615515).

84170834213 is a wasteful number, since it uses less digits than its factorization.

84170834213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50615514.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 84170834213 in words is "eighty-four billion, one hundred seventy million, eight hundred thirty-four thousand, two hundred thirteen".