5401666560 has 352 divisors, whose sum is σ = 18487848960. Its totient is φ = 1342144512.

The previous prime is 5401666549. The next prime is 5401666573. The reversal of 5401666560 is 656661045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24222609 + ... + 24222831.

Almost surely, 2^5401666560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5401666560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9243924480).

5401666560 is an abundant number, since it is smaller than the sum of its proper divisors (13086182400).

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

5401666560 is a wasteful number, since it uses less digits than its factorization.

5401666560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 5401666560 is about 73496.0309132405. The cubic root of 5401666560 is about 1754.5911077343.

The spelling of 5401666560 in words is "five billion, four hundred one million, six hundred sixty-six thousand, five hundred sixty".