5638401671 has 8 divisors (see below), whose sum is σ = 6580992000. Its totient is φ = 4730087448.

The previous prime is 5638401653. The next prime is 5638401673. The reversal of 5638401671 is 1761048365.

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

It is a cyclic number.

It is not a de Polignac number, because 5638401671 - 2²² = 5634207367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638401673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8568671 + ... + 8569328.

It is an arithmetic number, because the mean of its divisors is an integer number (822624000).

Almost surely, 2^5638401671 is an apocalyptic number.

5638401671 is a deficient number, since it is larger than the sum of its proper divisors (942590329).

5638401671 is a wasteful number, since it uses less digits than its factorization.

5638401671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17138053.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 5638401671 is about 75089.2913204007. The cubic root of 5638401671 is about 1779.8579265261.

The spelling of 5638401671 in words is "five billion, six hundred thirty-eight million, four hundred one thousand, six hundred seventy-one".