8120088505 has 32 divisors (see below), whose sum is σ = 10534147200. Its totient is φ = 5986360320.

The previous prime is 8120088409. The next prime is 8120088593. The reversal of 8120088505 is 5058800218.

It is not a de Polignac number, because 8120088505 - 2⁷ = 8120088377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1173546 + ... + 1180444.

It is an arithmetic number, because the mean of its divisors is an integer number (329192100).

Almost surely, 2^8120088505 is an apocalyptic number.

8120088505 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8120088505 is a deficient number, since it is larger than the sum of its proper divisors (2414058695).

8120088505 is a wasteful number, since it uses less digits than its factorization.

8120088505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 8120088505 is about 90111.5336957484. The cubic root of 8120088505 is about 2009.9577150911.

The spelling of 8120088505 in words is "eight billion, one hundred twenty million, eighty-eight thousand, five hundred five".