5278512273621 has 4 divisors (see below), whose sum is σ = 7038016364832. Its totient is φ = 3519008182412.

The previous prime is 5278512273571. The next prime is 5278512273623. The reversal of 5278512273621 is 1263722158725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5278512273621 - 2¹⁰ = 5278512272597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278512273623) 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, 879752045601 + ... + 879752045606.

It is an arithmetic number, because the mean of its divisors is an integer number (1759504091208).

Almost surely, 2^{5278512273621} is an apocalyptic number.

It is an amenable number.

5278512273621 is a deficient number, since it is larger than the sum of its proper divisors (1759504091211).

5278512273621 is a wasteful number, since it uses less digits than its factorization.

5278512273621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759504091210.

The product of its digits is 2822400, while the sum is 51.

The spelling of 5278512273621 in words is "five trillion, two hundred seventy-eight billion, five hundred twelve million, two hundred seventy-three thousand, six hundred twenty-one".