388853878545 has 48 divisors (see below), whose sum is σ = 755160000192. Its totient is φ = 183439658880.

The previous prime is 388853878529. The next prime is 388853878583. The reversal of 388853878545 is 545878358883.

It is a happy number.

388853878545 is a `hidden beast` number, since 3 + 8 + 8 + 8 + 5 + 3 + 8 + 78 + 545 = 666.

It is not a de Polignac number, because 388853878545 - 2⁴ = 388853878529 is a prime.

It is a super-2 number, since 2×388853878545² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10597407 + ... + 10634036.

It is an arithmetic number, because the mean of its divisors is an integer number (15732500004).

Almost surely, 2^388853878545 is an apocalyptic number.

It is an amenable number.

388853878545 is a deficient number, since it is larger than the sum of its proper divisors (366306121647).

388853878545 is a wasteful number, since it uses less digits than its factorization.

388853878545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21231502 (or 21231499 counting only the distinct ones).

The product of its digits is 1032192000, while the sum is 72.

The spelling of 388853878545 in words is "three hundred eighty-eight billion, eight hundred fifty-three million, eight hundred seventy-eight thousand, five hundred forty-five".