84396621075 has 96 divisors (see below), whose sum is σ = 158327366400. Its totient is φ = 39325201920.

The previous prime is 84396621059. The next prime is 84396621131. The reversal of 84396621075 is 57012669348.

It is not a de Polignac number, because 84396621075 - 2⁴ = 84396621059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35325981 + ... + 35328369.

It is an arithmetic number, because the mean of its divisors is an integer number (1649243400).

It is a 2-persistent number, because it is pandigital, and so is 2⋅84396621075 = 168793242150, but 3⋅84396621075 = 253189863225 is not.

Almost surely, 2^84396621075 is an apocalyptic number.

84396621075 is the 155285-th nonagonal number.

84396621075 is a deficient number, since it is larger than the sum of its proper divisors (73930745325).

84396621075 is a wasteful number, since it uses less digits than its factorization.

84396621075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341 (or 4336 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 84396621075 in words is "eighty-four billion, three hundred ninety-six million, six hundred twenty-one thousand, seventy-five".