53409842117 has 4 divisors (see below), whose sum is σ = 53413277280. Its totient is φ = 53406406956.

The previous prime is 53409842077. The next prime is 53409842119. The reversal of 53409842117 is 71124890435.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71124890435 = 5 ⋅14224978087.

It is a cyclic number.

It is not a de Polignac number, because 53409842117 - 2⁶ = 53409842053 is a prime.

It is a super-2 number, since 2×53409842117² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53409842119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694153 + ... + 1725390.

It is an arithmetic number, because the mean of its divisors is an integer number (13353319320).

Almost surely, 2^53409842117 is an apocalyptic number.

It is an amenable number.

53409842117 is a deficient number, since it is larger than the sum of its proper divisors (3435163).

53409842117 is a wasteful number, since it uses less digits than its factorization.

53409842117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435162.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 53409842117 in words is "fifty-three billion, four hundred nine million, eight hundred forty-two thousand, one hundred seventeen".