52645278520 has 16 divisors (see below), whose sum is σ = 118451876760. Its totient is φ = 21058111392.

The previous prime is 52645278509. The next prime is 52645278551. The reversal of 52645278520 is 2587254625.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658065942 + ... + 658066021.

Almost surely, 2^52645278520 is an apocalyptic number.

It is an amenable number.

52645278520 is an abundant number, since it is smaller than the sum of its proper divisors (65806598240).

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

52645278520 is a wasteful number, since it uses less digits than its factorization.

52645278520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316131974 (or 1316131970 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 52645278520 in words is "fifty-two billion, six hundred forty-five million, two hundred seventy-eight thousand, five hundred twenty".