53621212104 has 192 divisors, whose sum is σ = 154736524800. Its totient is φ = 16738444800.

The previous prime is 53621212087. The next prime is 53621212157. The reversal of 53621212104 is 40121212635.

53621212104 is a `hidden beast` number, since 5 + 3 + 621 + 21 + 2 + 10 + 4 = 666.

It is a super-2 number, since 2×53621212104² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24141714 + ... + 24143934.

It is an arithmetic number, because the mean of its divisors is an integer number (805919400).

Almost surely, 2^53621212104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53621212104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77368262400).

53621212104 is an abundant number, since it is smaller than the sum of its proper divisors (101115312696).

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

53621212104 is a wasteful number, since it uses less digits than its factorization.

53621212104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 53621212104 its reverse (40121212635), we get a palindrome (93742424739).

The spelling of 53621212104 in words is "fifty-three billion, six hundred twenty-one million, two hundred twelve thousand, one hundred four".