5661660054 has 8 divisors (see below), whose sum is σ = 11323320120. Its totient is φ = 1887220016.

The previous prime is 5661659999. The next prime is 5661660073. The reversal of 5661660054 is 4500661665.

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

5661660054 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5661659994 and 5661660021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471804999 + ... + 471805010.

It is an arithmetic number, because the mean of its divisors is an integer number (1415415015).

Almost surely, 2^5661660054 is an apocalyptic number.

5661660054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

5661660054 is a wasteful number, since it uses less digits than its factorization.

5661660054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943610014.

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

The square root of 5661660054 is about 75244.0034421348. The cubic root of 5661660054 is about 1782.3018713144.

The spelling of 5661660054 in words is "five billion, six hundred sixty-one million, six hundred sixty thousand, fifty-four".