52968148388621 has 4 divisors (see below), whose sum is σ = 52968166039932. Its totient is φ = 52968130737312.

The previous prime is 52968148388611. The next prime is 52968148388719. The reversal of 52968148388621 is 12688384186925.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43451972259721 + 9516176128900 = 6591811^2 + 3084830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52968148388621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52968148388611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075770 + ... + 10742283.

It is an arithmetic number, because the mean of its divisors is an integer number (13242041509983).

Almost surely, 2^{52968148388621} is an apocalyptic number.

It is an amenable number.

52968148388621 is a deficient number, since it is larger than the sum of its proper divisors (17651311).

52968148388621 is a wasteful number, since it uses less digits than its factorization.

52968148388621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17651310.

The product of its digits is 318504960, while the sum is 71.

The spelling of 52968148388621 in words is "fifty-two trillion, nine hundred sixty-eight billion, one hundred forty-eight million, three hundred eighty-eight thousand, six hundred twenty-one".