53243634477 has 24 divisors (see below), whose sum is σ = 78298470432. Its totient is φ = 32158672480.

The previous prime is 53243634349. The next prime is 53243634491. The reversal of 53243634477 is 77443634235.

It is not a de Polignac number, because 53243634477 - 2⁷ = 53243634349 is a prime.

It is a super-2 number, since 2×53243634477² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53243634077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143943 + ... + 356660.

It is an arithmetic number, because the mean of its divisors is an integer number (3262436268).

Almost surely, 2^53243634477 is an apocalyptic number.

It is an amenable number.

53243634477 is a deficient number, since it is larger than the sum of its proper divisors (25054835955).

53243634477 is a wasteful number, since it uses less digits than its factorization.

53243634477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500921 (or 500910 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 48.

The spelling of 53243634477 in words is "fifty-three billion, two hundred forty-three million, six hundred thirty-four thousand, four hundred seventy-seven".