53111355556 has 192 divisors, whose sum is σ = 116501898240. Its totient is φ = 20696924160.

The previous prime is 53111355551. The next prime is 53111355581. The reversal of 53111355556 is 65555311135.

It is not an unprimeable number, because it can be changed into a prime (53111355551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 227945616 + ... + 227945848.

It is an arithmetic number, because the mean of its divisors is an integer number (606780720).

Almost surely, 2^53111355556 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 53111355556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58250949120).

53111355556 is an abundant number, since it is smaller than the sum of its proper divisors (63390542684).

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

53111355556 is a wasteful number, since it uses less digits than its factorization.

53111355556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 492 counting only the distinct ones).

The product of its digits is 168750, while the sum is 40.

The spelling of 53111355556 in words is "fifty-three billion, one hundred eleven million, three hundred fifty-five thousand, five hundred fifty-six".