5665601514981 has 8 divisors (see below), whose sum is σ = 7729812919840. Its totient is φ = 3689228893392.

The previous prime is 5665601514959. The next prime is 5665601515033. The reversal of 5665601514981 is 1894151065665.

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

It is not a de Polignac number, because 5665601514981 - 2¹⁵ = 5665601482213 is a prime.

It is a super-2 number, since 2×5665601514981² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665601014981) 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, 21959695666 + ... + 21959695923.

It is an arithmetic number, because the mean of its divisors is an integer number (966226614980).

Almost surely, 2^{5665601514981} is an apocalyptic number.

It is an amenable number.

5665601514981 is a deficient number, since it is larger than the sum of its proper divisors (2064211404859).

5665601514981 is a wasteful number, since it uses less digits than its factorization.

5665601514981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43919391635.

The product of its (nonzero) digits is 7776000, while the sum is 57.

The spelling of 5665601514981 in words is "five trillion, six hundred sixty-five billion, six hundred one million, five hundred fourteen thousand, nine hundred eighty-one".