84198573291 has 32 divisors (see below), whose sum is σ = 132749890560. Its totient is φ = 46446309504.

The previous prime is 84198573287. The next prime is 84198573323. The reversal of 84198573291 is 19237589148.

It is not a de Polignac number, because 84198573291 - 2² = 84198573287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84198573091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5798346 + ... + 5812848.

It is an arithmetic number, because the mean of its divisors is an integer number (4148434080).

Almost surely, 2^84198573291 is an apocalyptic number.

84198573291 is a deficient number, since it is larger than the sum of its proper divisors (48551317269).

84198573291 is a wasteful number, since it uses less digits than its factorization.

84198573291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24075.

The product of its digits is 4354560, while the sum is 57.

The spelling of 84198573291 in words is "eighty-four billion, one hundred ninety-eight million, five hundred seventy-three thousand, two hundred ninety-one".