54778838417 has 8 divisors (see below), whose sum is σ = 55855972224. Its totient is φ = 53703318448.

The previous prime is 54778838399. The next prime is 54778838419. The reversal of 54778838417 is 71483887745.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54778838417 - 2¹⁸ = 54778576273 is a prime.

It is a super-2 number, since 2×54778838417² (a number of 22 digits) contains 22 as substring.

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 54778838417.

It is not an unprimeable number, because it can be changed into a prime (54778838419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334793 + ... + 470790.

It is an arithmetic number, because the mean of its divisors is an integer number (6981996528).

Almost surely, 2^54778838417 is an apocalyptic number.

It is an amenable number.

54778838417 is a deficient number, since it is larger than the sum of its proper divisors (1077133807).

54778838417 is a wasteful number, since it uses less digits than its factorization.

54778838417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806919.

The product of its digits is 42147840, while the sum is 62.

The spelling of 54778838417 in words is "fifty-four billion, seven hundred seventy-eight million, eight hundred thirty-eight thousand, four hundred seventeen".