89845696817810 has 32 divisors (see below), whose sum is σ = 162564306231600. Its totient is φ = 35751165493248.

The previous prime is 89845696817801. The next prime is 89845696817861. The reversal of 89845696817810 is 1871869654898.

It is a Cunningham number, because it is equal to 9478697²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 21768560531041 + 68077136286769 = 4665679^2 + 8250887^2 .

It is a super-2 number, since 2×89845696817810² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78463154 + ... + 79599986.

Almost surely, 2^{89845696817810} is an apocalyptic number.

89845696817810 is a deficient number, since it is larger than the sum of its proper divisors (72718609413790).

89845696817810 is a wasteful number, since it uses less digits than its factorization.

89845696817810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177982.

The product of its (nonzero) digits is 1672151040, while the sum is 80.

The spelling of 89845696817810 in words is "eighty-nine trillion, eight hundred forty-five billion, six hundred ninety-six million, eight hundred seventeen thousand, eight hundred ten".