8150121520 has 40 divisors (see below), whose sum is σ = 19126146384. Its totient is φ = 3229577472.

The previous prime is 8150121503. The next prime is 8150121559. The reversal of 8150121520 is 251210518.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×8150121520² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467499 + ... + 484618.

Almost surely, 2^8150121520 is an apocalyptic number.

8150121520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8150121520 is an abundant number, since it is smaller than the sum of its proper divisors (10976024864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8150121520 is a wasteful number, since it uses less digits than its factorization.

8150121520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952237 (or 952231 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 8150121520 is about 90278.0234608623. The cubic root of 8150121520 is about 2012.4326807465.

The spelling of 8150121520 in words is "eight billion, one hundred fifty million, one hundred twenty-one thousand, five hundred twenty".