52115429940 has 192 divisors, whose sum is σ = 169374965760. Its totient is φ = 11726507520.

The previous prime is 52115429903. The next prime is 52115429969. The reversal of 52115429940 is 4992451125.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 52115429892 and 52115429901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36469146 + ... + 36470574.

It is an arithmetic number, because the mean of its divisors is an integer number (882161280).

Almost surely, 2^52115429940 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 52115429940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84687482880).

52115429940 is an abundant number, since it is smaller than the sum of its proper divisors (117259535820).

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

52115429940 is a wasteful number, since it uses less digits than its factorization.

52115429940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 52115429940 in words is "fifty-two billion, one hundred fifteen million, four hundred twenty-nine thousand, nine hundred forty".