52121368721216 has 14 divisors (see below), whose sum is σ = 103428341056290. Its totient is φ = 26060684360576.

The previous prime is 52121368721171. The next prime is 52121368721263. The reversal of 52121368721216 is 61212786312125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31148632561216 + 20972736160000 = 5581096^2 + 4579600^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407198193071 + ... + 407198193198.

Almost surely, 2^{52121368721216} is an apocalyptic number.

It is an amenable number.

52121368721216 is a deficient number, since it is larger than the sum of its proper divisors (51306972335074).

52121368721216 is an equidigital number, since it uses as much as digits as its factorization.

52121368721216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814396386281 (or 814396386271 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The spelling of 52121368721216 in words is "fifty-two trillion, one hundred twenty-one billion, three hundred sixty-eight million, seven hundred twenty-one thousand, two hundred sixteen".