52636251421 has 12 divisors (see below), whose sum is σ = 58209354432. Its totient is φ = 47553529296.

The previous prime is 52636251419. The next prime is 52636251443. The reversal of 52636251421 is 12415263625.

52636251421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52636251421 - 2¹ = 52636251419 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 (52636251491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3305431 + ... + 3321316.

It is an arithmetic number, because the mean of its divisors is an integer number (4850779536).

Almost surely, 2^52636251421 is an apocalyptic number.

It is an amenable number.

52636251421 is a deficient number, since it is larger than the sum of its proper divisors (5573103011).

52636251421 is a wasteful number, since it uses less digits than its factorization.

52636251421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6626820 (or 6626807 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The spelling of 52636251421 in words is "fifty-two billion, six hundred thirty-six million, two hundred fifty-one thousand, four hundred twenty-one".