20152205140 has 24 divisors (see below), whose sum is σ = 42339880800. Its totient is φ = 8057024928.

The previous prime is 20152205089. The next prime is 20152205189. The reversal of 20152205140 is 4150225102.

It is a super-2 number, since 2×20152205140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 198042 + ... + 282001.

It is an arithmetic number, because the mean of its divisors is an integer number (1764161700).

Almost surely, 2^20152205140 is an apocalyptic number.

20152205140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20152205140 is an abundant number, since it is smaller than the sum of its proper divisors (22187675660).

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

20152205140 is a wasteful number, since it uses less digits than its factorization.

20152205140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482151 (or 482149 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 20152205140 in words is "twenty billion, one hundred fifty-two million, two hundred five thousand, one hundred forty".