53612621634 has 32 divisors (see below), whose sum is σ = 125970917184. Its totient is φ = 14996537280.

The previous prime is 53612621633. The next prime is 53612621663. The reversal of 53612621634 is 43612621635.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53612621592 and 53612621601.

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 15 ways as a sum of consecutive naturals, for example, 31241929 + ... + 31243644.

It is an arithmetic number, because the mean of its divisors is an integer number (3936591162).

Almost surely, 2^53612621634 is an apocalyptic number.

53612621634 is an abundant number, since it is smaller than the sum of its proper divisors (72358295550).

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

53612621634 is a wasteful number, since it uses less digits than its factorization.

53612621634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62485602.

The product of its digits is 155520, while the sum is 39.

Subtracting from 53612621634 its reverse (43612621635), we obtain a palindrome (9999999999).

The spelling of 53612621634 in words is "fifty-three billion, six hundred twelve million, six hundred twenty-one thousand, six hundred thirty-four".