5421662072161 has 16 divisors (see below), whose sum is σ = 5538852633600. Its totient is φ = 5305428345600.

The previous prime is 5421662072129. The next prime is 5421662072243. The reversal of 5421662072161 is 1612702661245.

It is a cyclic number.

It is not a de Polignac number, because 5421662072161 - 2⁵ = 5421662072129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5421662072461) 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, 14799360 + ... + 15161278.

It is an arithmetic number, because the mean of its divisors is an integer number (346178289600).

Almost surely, 2^{5421662072161} is an apocalyptic number.

It is an amenable number.

5421662072161 is a deficient number, since it is larger than the sum of its proper divisors (117190561439).

5421662072161 is a wasteful number, since it uses less digits than its factorization.

5421662072161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363240.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 5421662072161 in words is "five trillion, four hundred twenty-one billion, six hundred sixty-two million, seventy-two thousand, one hundred sixty-one".