53446140165 has 16 divisors (see below), whose sum is σ = 93287808576. Its totient is φ = 25913280000.

The previous prime is 53446140157. The next prime is 53446140229. The reversal of 53446140165 is 56104164435.

It is not a de Polignac number, because 53446140165 - 2³ = 53446140157 is a prime.

It is a Curzon number.

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, 161957836 + ... + 161958165.

It is an arithmetic number, because the mean of its divisors is an integer number (5830488036).

Almost surely, 2^53446140165 is an apocalyptic number.

53446140165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53446140165 is a deficient number, since it is larger than the sum of its proper divisors (39841668411).

53446140165 is a wasteful number, since it uses less digits than its factorization.

53446140165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323916020.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 53446140165 in words is "fifty-three billion, four hundred forty-six million, one hundred forty thousand, one hundred sixty-five".