51995837952 has 160 divisors (see below), whose sum is σ = 154272492000. Its totient is φ = 17291280384.

The previous prime is 51995837947. The next prime is 51995837981. The reversal of 51995837952 is 25973859915.

It is a self number, because there is not a number n which added to its sum of digits gives 51995837952.

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, 6202788 + ... + 6211164.

It is an arithmetic number, because the mean of its divisors is an integer number (964203075).

Almost surely, 2^51995837952 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 51995837952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77136246000).

51995837952 is an abundant number, since it is smaller than the sum of its proper divisors (102276654048).

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

51995837952 is an equidigital number, since it uses as much as digits as its factorization.

51995837952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853 (or 8831 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 63.

The spelling of 51995837952 in words is "fifty-one billion, nine hundred ninety-five million, eight hundred thirty-seven thousand, nine hundred fifty-two".