53440635386515 has 64 divisors (see below), whose sum is σ = 71255099583360. Its totient is φ = 38454388277760.

The previous prime is 53440635386513. The next prime is 53440635386563. The reversal of 53440635386515 is 51568353604435.

53440635386515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53440635386515 - 2¹ = 53440635386513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53440635386515.

It is not an unprimeable number, because it can be changed into a prime (53440635386513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198727089 + ... + 198995821.

It is an arithmetic number, because the mean of its divisors is an integer number (1113360930990).

Almost surely, 2^{53440635386515} is an apocalyptic number.

53440635386515 is a deficient number, since it is larger than the sum of its proper divisors (17814464196845).

53440635386515 is a wasteful number, since it uses less digits than its factorization.

53440635386515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269241 (or 269215 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 58.

The spelling of 53440635386515 in words is "fifty-three trillion, four hundred forty billion, six hundred thirty-five million, three hundred eighty-six thousand, five hundred fifteen".