54678653385515 has 16 divisors (see below), whose sum is σ = 67801019658240. Its totient is φ = 42288084084960.

The previous prime is 54678653385491. The next prime is 54678653385527. The reversal of 54678653385515 is 51558335687645.

It is a happy number.

It is not a de Polignac number, because 54678653385515 - 2³⁰ = 54677579643691 is a prime.

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, 182252135 + ... + 182551904.

It is an arithmetic number, because the mean of its divisors is an integer number (4237563728640).

Almost surely, 2^{54678653385515} is an apocalyptic number.

54678653385515 is a deficient number, since it is larger than the sum of its proper divisors (13122366272725).

54678653385515 is a wasteful number, since it uses less digits than its factorization.

54678653385515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364805042.

The product of its digits is 1814400000, while the sum is 71.

The spelling of 54678653385515 in words is "fifty-four trillion, six hundred seventy-eight billion, six hundred fifty-three million, three hundred eighty-five thousand, five hundred fifteen".