53126781489 has 12 divisors (see below), whose sum is σ = 76828238916. Its totient is φ = 35376521472.

The previous prime is 53126781431. The next prime is 53126781493. The reversal of 53126781489 is 98418762135.

53126781489 is a `hidden beast` number, since 531 + 2 + 67 + 8 + 1 + 48 + 9 = 666.

53126781489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45222149025 + 7904632464 = 212655^2 + 88908^2 .

It is not a de Polignac number, because 53126781489 - 2⁷ = 53126781361 is a prime.

It is a super-2 number, since 2×53126781489² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53126781689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3436264 + ... + 3451689.

It is an arithmetic number, because the mean of its divisors is an integer number (6402353243).

Almost surely, 2^53126781489 is an apocalyptic number.

It is an amenable number.

53126781489 is a deficient number, since it is larger than the sum of its proper divisors (23701457427).

53126781489 is a wasteful number, since it uses less digits than its factorization.

53126781489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888816 (or 6888813 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 53126781489 in words is "fifty-three billion, one hundred twenty-six million, seven hundred eighty-one thousand, four hundred eighty-nine".