52129867840 has 168 divisors, whose sum is σ = 128935886400. Its totient is φ = 20074429440.

The previous prime is 52129867819. The next prime is 52129867841. The reversal of 52129867840 is 4876892125.

It is not an unprimeable number, because it can be changed into a prime (52129867841) 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 23 ways as a sum of consecutive naturals, for example, 87027861 + ... + 87028459.

Almost surely, 2^52129867840 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 52129867840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64467943200).

52129867840 is an abundant number, since it is smaller than the sum of its proper divisors (76806018560).

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

52129867840 is a wasteful number, since it uses less digits than its factorization.

52129867840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 52129867840 in words is "fifty-two billion, one hundred twenty-nine million, eight hundred sixty-seven thousand, eight hundred forty".