5616642081 has 8 divisors (see below), whose sum is σ = 7648193664. Its totient is φ = 3664759280.

The previous prime is 5616642037. The next prime is 5616642103. The reversal of 5616642081 is 1802466165.

It is a happy number.

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 5616642081 - 2²² = 5612447777 is a prime.

It is a super-2 number, since 2×5616642081² = 63093336532120021122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5616642001) 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, 19917030 + ... + 19917311.

It is an arithmetic number, because the mean of its divisors is an integer number (956024208).

Almost surely, 2^5616642081 is an apocalyptic number.

It is an amenable number.

5616642081 is a deficient number, since it is larger than the sum of its proper divisors (2031551583).

5616642081 is a wasteful number, since it uses less digits than its factorization.

5616642081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39834391.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 5616642081 is about 74944.2598268873. The cubic root of 5616642081 is about 1777.5653792905.

The spelling of 5616642081 in words is "five billion, six hundred sixteen million, six hundred forty-two thousand, eighty-one".