54318781389 has 32 divisors (see below), whose sum is σ = 78108226560. Its totient is φ = 33474470400.

The previous prime is 54318781373. The next prime is 54318781399. The reversal of 54318781389 is 98318781345.

It is a happy number.

It is not a de Polignac number, because 54318781389 - 2⁴ = 54318781373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54318781399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323374 + ... + 461744.

It is an arithmetic number, because the mean of its divisors is an integer number (2440882080).

Almost surely, 2^54318781389 is an apocalyptic number.

It is an amenable number.

54318781389 is a deficient number, since it is larger than the sum of its proper divisors (23789445171).

54318781389 is a wasteful number, since it uses less digits than its factorization.

54318781389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138561.

The product of its digits is 5806080, while the sum is 57.

The spelling of 54318781389 in words is "fifty-four billion, three hundred eighteen million, seven hundred eighty-one thousand, three hundred eighty-nine".