53612621636 has 24 divisors (see below), whose sum is σ = 108286885056. Its totient is φ = 22749343200.

The previous prime is 53612621633. The next prime is 53612621663. The reversal of 53612621636 is 63612621635.

It is a junction number, because it is equal to n+sod(n) for n = 53612621593 and 53612621602.

It is not an unprimeable number, because it can be changed into a prime (53612621633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9476066 + ... + 9481721.

It is an arithmetic number, because the mean of its divisors is an integer number (4511953544).

Almost surely, 2^53612621636 is an apocalyptic number.

It is an amenable number.

53612621636 is an abundant number, since it is smaller than the sum of its proper divisors (54674263420).

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

53612621636 is a wasteful number, since it uses less digits than its factorization.

53612621636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18957899 (or 18957897 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

Subtracting 53612621636 from its reverse (63612621635), we obtain a palindrome (9999999999).

The spelling of 53612621636 in words is "fifty-three billion, six hundred twelve million, six hundred twenty-one thousand, six hundred thirty-six".