5401637178 has 64 divisors (see below), whose sum is σ = 12833372160. Its totient is φ = 1483486272.

The previous prime is 5401637159. The next prime is 5401637221. The reversal of 5401637178 is 8717361045.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

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, 108043 + ... + 149921.

It is an arithmetic number, because the mean of its divisors is an integer number (200521440).

Almost surely, 2^5401637178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5401637178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6416686080).

5401637178 is an abundant number, since it is smaller than the sum of its proper divisors (7431734982).

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

5401637178 is a wasteful number, since it uses less digits than its factorization.

5401637178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42011.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 5401637178 is about 73495.8310246234. The cubic root of 5401637178 is about 1754.5879264019.

The spelling of 5401637178 in words is "five billion, four hundred one million, six hundred thirty-seven thousand, one hundred seventy-eight".