38781240545 has 16 divisors (see below), whose sum is σ = 47628653952. Its totient is φ = 30297818880.

The previous prime is 38781240527. The next prime is 38781240557. The reversal of 38781240545 is 54504218783.

It is not a de Polignac number, because 38781240545 - 2⁶ = 38781240481 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38781240545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1421180 + ... + 1448210.

It is an arithmetic number, because the mean of its divisors is an integer number (2976790872).

Almost surely, 2^38781240545 is an apocalyptic number.

It is an amenable number.

38781240545 is a deficient number, since it is larger than the sum of its proper divisors (8847413407).

38781240545 is a wasteful number, since it uses less digits than its factorization.

38781240545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33752.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 38781240545 in words is "thirty-eight billion, seven hundred eighty-one million, two hundred forty thousand, five hundred forty-five".