52641967997 has 4 divisors (see below), whose sum is σ = 53184668796. Its totient is φ = 52099267200.

The previous prime is 52641967981. The next prime is 52641968003. The reversal of 52641967997 is 79976914625.

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 42038941156 + 10603026841 = 205034^2 + 102971^2 .

It is a cyclic number.

It is not a de Polignac number, because 52641967997 - 2⁴ = 52641967981 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 (52641967957) 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, 271350254 + ... + 271350447.

It is an arithmetic number, because the mean of its divisors is an integer number (13296167199).

Almost surely, 2^52641967997 is an apocalyptic number.

It is an amenable number.

52641967997 is a deficient number, since it is larger than the sum of its proper divisors (542700799).

52641967997 is an equidigital number, since it uses as much as digits as its factorization.

52641967997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542700798.

The product of its digits is 51438240, while the sum is 65.

The spelling of 52641967997 in words is "fifty-two billion, six hundred forty-one million, nine hundred sixty-seven thousand, nine hundred ninety-seven".