20151905024 has 72 divisors (see below), whose sum is σ = 40539657648. Its totient is φ = 9997516800.

The previous prime is 20151905023. The next prime is 20151905029. The reversal of 20151905024 is 42050915102.

It is not an unprimeable number, because it can be changed into a prime (20151905023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33530324 + ... + 33530924.

Almost surely, 2^20151905024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20151905024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20269828824).

20151905024 is an abundant number, since it is smaller than the sum of its proper divisors (20387752624).

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

20151905024 is an equidigital number, since it uses as much as digits as its factorization.

20151905024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 20151905024 in words is "twenty billion, one hundred fifty-one million, nine hundred five thousand, twenty-four".