12635053621 has 8 divisors (see below), whose sum is σ = 12734783424. Its totient is φ = 12535373760.

The previous prime is 12635053619. The next prime is 12635053631.

12635053621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12635053621 - 2¹ = 12635053619 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 (12635053601) 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 7 ways as a sum of consecutive naturals, for example, 621016 + ... + 641038.

It is an arithmetic number, because the mean of its divisors is an integer number (1591847928).

Almost surely, 2^12635053621 is an apocalyptic number.

It is an amenable number.

12635053621 is a deficient number, since it is larger than the sum of its proper divisors (99729803).

12635053621 is a wasteful number, since it uses less digits than its factorization.

12635053621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24971.

The product of its (nonzero) digits is 32400, while the sum is 34.

It can be divided in two parts, 126350 and 53621, that added together give a palindrome (179971).

The spelling of 12635053621 in words is "twelve billion, six hundred thirty-five million, fifty-three thousand, six hundred twenty-one".