3654755840545 has 32 divisors (see below), whose sum is σ = 4836580577280. Its totient is φ = 2640559331520.

The previous prime is 3654755840521. The next prime is 3654755840569. The reversal of 3654755840545 is 5450485574563.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3654755840521) and next prime (3654755840569).

It is not a de Polignac number, because 3654755840545 - 2¹¹ = 3654755838497 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9063907 + ... + 9458536.

It is an arithmetic number, because the mean of its divisors is an integer number (151143143040).

Almost surely, 2^{3654755840545} is an apocalyptic number.

It is an amenable number.

3654755840545 is a deficient number, since it is larger than the sum of its proper divisors (1181824736735).

3654755840545 is a wasteful number, since it uses less digits than its factorization.

3654755840545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18522565.

The product of its (nonzero) digits is 201600000, while the sum is 61.

The spelling of 3654755840545 in words is "three trillion, six hundred fifty-four billion, seven hundred fifty-five million, eight hundred forty thousand, five hundred forty-five".