53440023555 has 24 divisors (see below), whose sum is σ = 96656740128. Its totient is φ = 27262156416.

The previous prime is 53440023551. The next prime is 53440023577. The reversal of 53440023555 is 55532004435.

53440023555 is a `hidden beast` number, since 534 + 40 + 0 + 2 + 35 + 55 = 666.

It is not a de Polignac number, because 53440023555 - 2² = 53440023551 is a prime.

It is a super-2 number, since 2×53440023555² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53440023551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25815402 + ... + 25817471.

It is an arithmetic number, because the mean of its divisors is an integer number (4027364172).

Almost surely, 2^53440023555 is an apocalyptic number.

53440023555 is a deficient number, since it is larger than the sum of its proper divisors (43216716573).

53440023555 is a wasteful number, since it uses less digits than its factorization.

53440023555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51632907 (or 51632904 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 53440023555 in words is "fifty-three billion, four hundred forty million, twenty-three thousand, five hundred fifty-five".