53187443892 has 108 divisors (see below), whose sum is σ = 147864529540. Its totient is φ = 16108139520.

The previous prime is 53187443887. The next prime is 53187443899. The reversal of 53187443892 is 29834478135.

It is a happy number.

53187443892 is a `hidden beast` number, since 5 + 31 + 87 + 443 + 8 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49588163856 + 3599280036 = 222684^2 + 59994^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53187443899) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13802238 + ... + 13806090.

Almost surely, 2^53187443892 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 53187443892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73932264770).

53187443892 is an abundant number, since it is smaller than the sum of its proper divisors (94677085648).

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

53187443892 is a wasteful number, since it uses less digits than its factorization.

53187443892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054 (or 7038 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 53187443892 in words is "fifty-three billion, one hundred eighty-seven million, four hundred forty-three thousand, eight hundred ninety-two".