20145452152 has 64 divisors (see below), whose sum is σ = 45374929920. Its totient is φ = 8198032128.

The previous prime is 20145452143. The next prime is 20145452177. The reversal of 20145452152 is 25125454102.

It is a super-2 number, since 2×20145452152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119373 + ... + 233539.

It is an arithmetic number, because the mean of its divisors is an integer number (708983280).

Almost surely, 2^20145452152 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 20145452152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22687464960).

20145452152 is an abundant number, since it is smaller than the sum of its proper divisors (25229477768).

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

20145452152 is a wasteful number, since it uses less digits than its factorization.

20145452152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114340 (or 114336 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 20145452152 in words is "twenty billion, one hundred forty-five million, four hundred fifty-two thousand, one hundred fifty-two".