5381000538661 has 16 divisors (see below), whose sum is σ = 5997003816960. Its totient is φ = 4786200965680.

The previous prime is 5381000538607. The next prime is 5381000538689. The reversal of 5381000538661 is 1668350001835.

It is a cyclic number.

It is not a de Polignac number, because 5381000538661 - 2⁴¹ = 3181977283109 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 (5381000538691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55981 + ... + 3281026.

It is an arithmetic number, because the mean of its divisors is an integer number (374812738560).

Almost surely, 2^{5381000538661} is an apocalyptic number.

It is an amenable number.

5381000538661 is a deficient number, since it is larger than the sum of its proper divisors (616003278299).

5381000538661 is a wasteful number, since it uses less digits than its factorization.

5381000538661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340184.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 5381000538661 in words is "five trillion, three hundred eighty-one billion, five hundred thirty-eight thousand, six hundred sixty-one".