53986986018 has 96 divisors (see below), whose sum is σ = 138327920640. Its totient is φ = 14891199840.

The previous prime is 53986985939. The next prime is 53986986073. The reversal of 53986986018 is 81068968935.

53986986018 is a `hidden beast` number, since 539 + 8 + 6 + 9 + 86 + 0 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1620121 + ... + 1653107.

It is an arithmetic number, because the mean of its divisors is an integer number (1440915840).

Almost surely, 2^53986986018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53986986018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69163960320).

53986986018 is an abundant number, since it is smaller than the sum of its proper divisors (84340934622).

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

53986986018 is a wasteful number, since it uses less digits than its factorization.

53986986018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33452 (or 33449 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 53986986018 in words is "fifty-three billion, nine hundred eighty-six million, nine hundred eighty-six thousand, eighteen".