53044374465 has 24 divisors (see below), whose sum is σ = 91961469288. Its totient is φ = 28284829440.

The previous prime is 53044374463. The next prime is 53044374479. The reversal of 53044374465 is 56447344035.

53044374465 is a `hidden beast` number, since 530 + 4 + 4 + 3 + 74 + 46 + 5 = 666.

53044374465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22353539121 + 30690835344 = 149511^2 + 175188^2 .

It is not a de Polignac number, because 53044374465 - 2¹ = 53044374463 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 53044374465.

It is not an unprimeable number, because it can be changed into a prime (53044374463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124717 + ... + 348773.

It is an arithmetic number, because the mean of its divisors is an integer number (3831727887).

Almost surely, 2^53044374465 is an apocalyptic number.

It is an amenable number.

53044374465 is a deficient number, since it is larger than the sum of its proper divisors (38917094823).

53044374465 is a wasteful number, since it uses less digits than its factorization.

53044374465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229329 (or 229326 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 45.

The spelling of 53044374465 in words is "fifty-three billion, forty-four million, three hundred seventy-four thousand, four hundred sixty-five".