53440123545 has 16 divisors (see below), whose sum is σ = 95004664320. Its totient is φ = 28501399152.

The previous prime is 53440123537. The next prime is 53440123637. The reversal of 53440123545 is 54532104435.

53440123545 is a `hidden beast` number, since 53 + 4 + 40 + 1 + 23 + 545 = 666.

It is not a de Polignac number, because 53440123545 - 2³ = 53440123537 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 197926249 + ... + 197926518.

It is an arithmetic number, because the mean of its divisors is an integer number (5937791520).

Almost surely, 2^53440123545 is an apocalyptic number.

It is an amenable number.

53440123545 is a deficient number, since it is larger than the sum of its proper divisors (41564540775).

53440123545 is a wasteful number, since it uses less digits than its factorization.

53440123545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395852781 (or 395852775 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 53440123545 in words is "fifty-three billion, four hundred forty million, one hundred twenty-three thousand, five hundred forty-five".