38120546565 has 64 divisors (see below), whose sum is σ = 68704204800. Its totient is φ = 20052375552.

The previous prime is 38120546557. The next prime is 38120546617. The reversal of 38120546565 is 56564502183.

38120546565 is a `hidden beast` number, since 3 + 8 + 120 + 5 + 465 + 65 = 666.

It is not a de Polignac number, because 38120546565 - 2³ = 38120546557 is a prime.

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 38120546565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3275637 + ... + 3287253.

It is an arithmetic number, because the mean of its divisors is an integer number (1073503200).

Almost surely, 2^38120546565 is an apocalyptic number.

It is an amenable number.

38120546565 is a deficient number, since it is larger than the sum of its proper divisors (30583658235).

38120546565 is a wasteful number, since it uses less digits than its factorization.

38120546565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963 (or 11957 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 38120546565 in words is "thirty-eight billion, one hundred twenty million, five hundred forty-six thousand, five hundred sixty-five".