53185458136 has 64 divisors (see below), whose sum is σ = 104230748160. Its totient is φ = 25421088000.

The previous prime is 53185458121. The next prime is 53185458149. The reversal of 53185458136 is 63185458135.

53185458136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×53185458136⁴ (a number of 44 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53185458136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4191081 + ... + 4203751.

It is an arithmetic number, because the mean of its divisors is an integer number (1628605440).

Almost surely, 2^53185458136 is an apocalyptic number.

It is an amenable number.

53185458136 is a deficient number, since it is larger than the sum of its proper divisors (51045290024).

53185458136 is a wasteful number, since it uses less digits than its factorization.

53185458136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12976 (or 12972 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

Subtracting 53185458136 from its reverse (63185458135), we obtain a palindrome (9999999999).

The spelling of 53185458136 in words is "fifty-three billion, one hundred eighty-five million, four hundred fifty-eight thousand, one hundred thirty-six".