53319987639 has 32 divisors (see below), whose sum is σ = 81156600000. Its totient is φ = 34573537152.

The previous prime is 53319987629. The next prime is 53319987697. The reversal of 53319987639 is 93678991335.

53319987639 is a `hidden beast` number, since 533 + 1 + 9 + 98 + 7 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 53319987639 - 2⁵ = 53319987607 is a prime.

It is a super-3 number, since 3×53319987639³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53319987619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3377737 + ... + 3393485.

It is an arithmetic number, because the mean of its divisors is an integer number (2536143750).

Almost surely, 2^53319987639 is an apocalyptic number.

53319987639 is a deficient number, since it is larger than the sum of its proper divisors (27836612361).

53319987639 is a wasteful number, since it uses less digits than its factorization.

53319987639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19184 (or 19178 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The spelling of 53319987639 in words is "fifty-three billion, three hundred nineteen million, nine hundred eighty-seven thousand, six hundred thirty-nine".