53287665380 has 24 divisors (see below), whose sum is σ = 112894403832. Its totient is φ = 21126436352.

The previous prime is 53287665359. The next prime is 53287665383. The reversal of 53287665380 is 8356678235.

It can be written as a sum of positive squares in 4 ways, for example, as 1483174144 + 51804491236 = 38512^2 + 227606^2 .

It is a super-3 number, since 3×53287665380³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (53287665383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11787047 + ... + 11791566.

It is an arithmetic number, because the mean of its divisors is an integer number (4703933493).

Almost surely, 2^53287665380 is an apocalyptic number.

It is an amenable number.

53287665380 is an abundant number, since it is smaller than the sum of its proper divisors (59606738452).

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

53287665380 is a wasteful number, since it uses less digits than its factorization.

53287665380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23578735 (or 23578733 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 53287665380 in words is "fifty-three billion, two hundred eighty-seven million, six hundred sixty-five thousand, three hundred eighty".