54400178412 has 18 divisors (see below), whose sum is σ = 137511562188. Its totient is φ = 18133392792.

The previous prime is 54400178411. The next prime is 54400178531. The reversal of 54400178412 is 21487100445.

It is a happy number.

54400178412 is a `hidden beast` number, since 5 + 440 + 0 + 178 + 41 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×54400178412² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1511116067 = 54400178412 / (5 + 4 + 4 + 0 + 0 + 1 + 7 + 8 + 4 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (54400178411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 755557998 + ... + 755558069.

Almost surely, 2^54400178412 is an apocalyptic number.

It is an amenable number.

54400178412 is an abundant number, since it is smaller than the sum of its proper divisors (83111383776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54400178412 is a wasteful number, since it uses less digits than its factorization.

54400178412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511116077 (or 1511116072 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

Adding to 54400178412 its reverse (21487100445), we get a palindrome (75887278857).

The spelling of 54400178412 in words is "fifty-four billion, four hundred million, one hundred seventy-eight thousand, four hundred twelve".