53576221840 has 20 divisors (see below), whose sum is σ = 124564715964. Its totient is φ = 21430488704.

The previous prime is 53576221813. The next prime is 53576221847. The reversal of 53576221840 is 4812267535.

It can be written as a sum of positive squares in 2 ways, for example, as 28095123456 + 25481098384 = 167616^2 + 159628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (53576221847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334851307 + ... + 334851466.

Almost surely, 2^53576221840 is an apocalyptic number.

It is an amenable number.

53576221840 is an abundant number, since it is smaller than the sum of its proper divisors (70988494124).

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

53576221840 is a wasteful number, since it uses less digits than its factorization.

53576221840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669702786 (or 669702780 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 53576221840 in words is "fifty-three billion, five hundred seventy-six million, two hundred twenty-one thousand, eight hundred forty".