54815277385 has 32 divisors (see below), whose sum is σ = 73538720640. Its totient is φ = 38877273600.

The previous prime is 54815277379. The next prime is 54815277389. The reversal of 54815277385 is 58377251845.

It is a happy number.

It is not a de Polignac number, because 54815277385 - 2²⁹ = 54278406473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (54815277389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9226746 + ... + 9232684.

It is an arithmetic number, because the mean of its divisors is an integer number (2298085020).

Almost surely, 2^54815277385 is an apocalyptic number.

54815277385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54815277385 is a deficient number, since it is larger than the sum of its proper divisors (18723443255).

54815277385 is a wasteful number, since it uses less digits than its factorization.

54815277385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10089.

The product of its digits is 9408000, while the sum is 55.

The spelling of 54815277385 in words is "fifty-four billion, eight hundred fifteen million, two hundred seventy-seven thousand, three hundred eighty-five".