53185391879 has 2 divisors, whose sum is σ = 53185391880. Its totient is φ = 53185391878.

The previous prime is 53185391863. The next prime is 53185391887. The reversal of 53185391879 is 97819358135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53185391879 - 2⁴ = 53185391863 is a prime.

It is a super-3 number, since 3×53185391879³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53185391849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26592695939 + 26592695940.

It is an arithmetic number, because the mean of its divisors is an integer number (26592695940).

Almost surely, 2^53185391879 is an apocalyptic number.

53185391879 is a deficient number, since it is larger than the sum of its proper divisors (1).

53185391879 is an equidigital number, since it uses as much as digits as its factorization.

53185391879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 59.

The spelling of 53185391879 in words is "fifty-three billion, one hundred eighty-five million, three hundred ninety-one thousand, eight hundred seventy-nine".