33556553145 has 12 divisors (see below), whose sum is σ = 58164692196. Its totient is φ = 17896828320.

The previous prime is 33556553123. The next prime is 33556553183. The reversal of 33556553145 is 54135565533.

33556553145 is a `hidden beast` number, since 3 + 3 + 5 + 56 + 553 + 1 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25887522816 + 7669030329 = 160896^2 + 87573^2 .

It is not a de Polignac number, because 33556553145 - 2⁶ = 33556553081 is a prime.

It is a super-2 number, since 2×33556553145² (a number of 22 digits) contains 22 as substring.

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), and also a Moran number because the ratio is a prime number: 745701181 = 33556553145 / (3 + 3 + 5 + 5 + 6 + 5 + 5 + 3 + 1 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 33556553145.

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 11 ways as a sum of consecutive naturals, for example, 372850546 + ... + 372850635.

It is an arithmetic number, because the mean of its divisors is an integer number (4847057683).

Almost surely, 2^33556553145 is an apocalyptic number.

It is an amenable number.

33556553145 is a deficient number, since it is larger than the sum of its proper divisors (24608139051).

33556553145 is a wasteful number, since it uses less digits than its factorization.

33556553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745701192 (or 745701189 counting only the distinct ones).

The product of its digits is 2025000, while the sum is 45.

The spelling of 33556553145 in words is "thirty-three billion, five hundred fifty-six million, five hundred fifty-three thousand, one hundred forty-five".