52129504840 has 32 divisors (see below), whose sum is σ = 134047298880. Its totient is φ = 17872972992.

The previous prime is 52129504813. The next prime is 52129504877. The reversal of 52129504840 is 4840592125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 52129504793 and 52129504802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93088122 + ... + 93088681.

It is an arithmetic number, because the mean of its divisors is an integer number (4188978090).

Almost surely, 2^52129504840 is an apocalyptic number.

It is an amenable number.

52129504840 is an abundant number, since it is smaller than the sum of its proper divisors (81917794040).

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

52129504840 is a wasteful number, since it uses less digits than its factorization.

52129504840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186176821 (or 186176817 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 52129504840 in words is "fifty-two billion, one hundred twenty-nine million, five hundred four thousand, eight hundred forty".