20129148312 has 128 divisors (see below), whose sum is σ = 61977000960. Its totient is φ = 5305259520.

The previous prime is 20129148311. The next prime is 20129148329. The reversal of 20129148312 is 21384192102.

It is a super-2 number, since 2×20129148312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20129148311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5814262 + ... + 5817722.

It is an arithmetic number, because the mean of its divisors is an integer number (484195320).

Almost surely, 2^20129148312 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 20129148312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30988500480).

20129148312 is an abundant number, since it is smaller than the sum of its proper divisors (41847852648).

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

20129148312 is a wasteful number, since it uses less digits than its factorization.

20129148312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153 (or 6149 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The spelling of 20129148312 in words is "twenty billion, one hundred twenty-nine million, one hundred forty-eight thousand, three hundred twelve".