53665945488 has 120 divisors (see below), whose sum is σ = 151008384696. Its totient is φ = 17791488000.

The previous prime is 53665945453. The next prime is 53665945573. The reversal of 53665945488 is 88454956635.

It is a happy number.

53665945488 is a `hidden beast` number, since 5 + 3 + 6 + 65 + 94 + 5 + 488 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 32916119184 + 20749826304 = 181428^2 + 144048^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22923198 + ... + 22925538.

Almost surely, 2^53665945488 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 53665945488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75504192348).

53665945488 is an abundant number, since it is smaller than the sum of its proper divisors (97342439208).

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

53665945488 is a wasteful number, since it uses less digits than its factorization.

53665945488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153 (or 3144 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 63.

The spelling of 53665945488 in words is "fifty-three billion, six hundred sixty-five million, nine hundred forty-five thousand, four hundred eighty-eight".