53436013551 has 20 divisors (see below), whose sum is σ = 83294787312. Its totient is φ = 34075137888.

The previous prime is 53436013537. The next prime is 53436013591. The reversal of 53436013551 is 15531063435.

53436013551 is a `hidden beast` number, since 5 + 3 + 43 + 60 + 1 + 3 + 551 = 666.

It is not a de Polignac number, because 53436013551 - 2⁹ = 53436013039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53436013591) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14339526 + ... + 14343251.

Almost surely, 2^53436013551 is an apocalyptic number.

53436013551 is a deficient number, since it is larger than the sum of its proper divisors (29858773761).

53436013551 is a wasteful number, since it uses less digits than its factorization.

53436013551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28682812 (or 28682803 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 53436013551 its reverse (15531063435), we get a palindrome (68967076986).

The spelling of 53436013551 in words is "fifty-three billion, four hundred thirty-six million, thirteen thousand, five hundred fifty-one".