84641527206890 has 16 divisors (see below), whose sum is σ = 153128123336232. Its totient is φ = 33684749913024.

The previous prime is 84641527206883. The next prime is 84641527206917. The reversal of 84641527206890 is 9860272514648.

It is a Cunningham number, because it is equal to 9200083²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 84641527206889 + 1 = 9200083^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21482619149 + ... + 21482623088.

Almost surely, 2^{84641527206890} is an apocalyptic number.

84641527206890 is a deficient number, since it is larger than the sum of its proper divisors (68486596129342).

84641527206890 is a wasteful number, since it uses less digits than its factorization.

84641527206890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42965242441.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 84641527206890 in words is "eighty-four trillion, six hundred forty-one billion, five hundred twenty-seven million, two hundred six thousand, eight hundred ninety".