52128602431 has 4 divisors (see below), whose sum is σ = 52606846600. Its totient is φ = 51650358264.

The previous prime is 52128602423. The next prime is 52128602459. The reversal of 52128602431 is 13420682125.

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

It is a cyclic number.

It is not a de Polignac number, because 52128602431 - 2³ = 52128602423 is a prime.

It is a super-2 number, since 2×52128602431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52128602401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239121921 + ... + 239122138.

It is an arithmetic number, because the mean of its divisors is an integer number (13151711650).

Almost surely, 2^52128602431 is an apocalyptic number.

52128602431 is a deficient number, since it is larger than the sum of its proper divisors (478244169).

52128602431 is a wasteful number, since it uses less digits than its factorization.

52128602431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478244168.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 52128602431 in words is "fifty-two billion, one hundred twenty-eight million, six hundred two thousand, four hundred thirty-one".