90526565606399 has 4 divisors (see below), whose sum is σ = 97490147576136. Its totient is φ = 83562983636664.

The previous prime is 90526565606383. The next prime is 90526565606429. The reversal of 90526565606399 is 99360656562509.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90526565606399 - 2⁴ = 90526565606383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90526565606369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481790984849 + ... + 3481790984874.

It is an arithmetic number, because the mean of its divisors is an integer number (24372536894034).

Almost surely, 2^{90526565606399} is an apocalyptic number.

90526565606399 is a deficient number, since it is larger than the sum of its proper divisors (6963581969737).

90526565606399 is a wasteful number, since it uses less digits than its factorization.

90526565606399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963581969736.

The product of its (nonzero) digits is 708588000, while the sum is 71.

The spelling of 90526565606399 in words is "ninety trillion, five hundred twenty-six billion, five hundred sixty-five million, six hundred six thousand, three hundred ninety-nine".