84897570849 has 32 divisors (see below), whose sum is σ = 140321448960. Its totient is φ = 44458949952.

The previous prime is 84897570829. The next prime is 84897570853. The reversal of 84897570849 is 94807579848.

It is not a de Polignac number, because 84897570849 - 2⁹ = 84897570337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84897570809) 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, 1080687 + ... + 1156580.

It is an arithmetic number, because the mean of its divisors is an integer number (4385045280).

Almost surely, 2^84897570849 is an apocalyptic number.

It is an amenable number.

84897570849 is a deficient number, since it is larger than the sum of its proper divisors (55423878111).

84897570849 is a wasteful number, since it uses less digits than its factorization.

84897570849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237429.

The product of its (nonzero) digits is 162570240, while the sum is 69.

The spelling of 84897570849 in words is "eighty-four billion, eight hundred ninety-seven million, five hundred seventy thousand, eight hundred forty-nine".