90505006505 has 8 divisors (see below), whose sum is σ = 114322113600. Its totient is φ = 68593268016.

The previous prime is 90505006477. The next prime is 90505006507. The reversal of 90505006505 is 50560050509.

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 90505006505 - 2²² = 90500812201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90505006507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476342045 + ... + 476342234.

It is an arithmetic number, because the mean of its divisors is an integer number (14290264200).

Almost surely, 2^90505006505 is an apocalyptic number.

90505006505 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90505006505 is a deficient number, since it is larger than the sum of its proper divisors (23817107095).

90505006505 is a wasteful number, since it uses less digits than its factorization.

90505006505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952684303.

The product of its (nonzero) digits is 33750, while the sum is 35.

The spelling of 90505006505 in words is "ninety billion, five hundred five million, six thousand, five hundred five".