90837841805 has 8 divisors (see below), whose sum is σ = 109736991000. Its totient is φ = 72182552896.

The previous prime is 90837841777. The next prime is 90837841813. The reversal of 90837841805 is 50814873809.

It can be written as a sum of positive squares in 4 ways, for example, as 20160024196 + 70677817609 = 141986^2 + 265853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90837841805 - 2³⁰ = 89764099981 is a prime.

It is a congruent number.

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, 60964250 + ... + 60965739.

It is an arithmetic number, because the mean of its divisors is an integer number (13717123875).

Almost surely, 2^90837841805 is an apocalyptic number.

It is an amenable number.

90837841805 is a deficient number, since it is larger than the sum of its proper divisors (18899149195).

90837841805 is a wasteful number, since it uses less digits than its factorization.

90837841805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121930143.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 90837841805 in words is "ninety billion, eight hundred thirty-seven million, eight hundred forty-one thousand, eight hundred five".