5891209400161 has 4 divisors (see below), whose sum is σ = 5891229139972. Its totient is φ = 5891189660352.

The previous prime is 5891209400101. The next prime is 5891209400287. The reversal of 5891209400161 is 1610049021985.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 927474933025 + 4963734467136 = 963055^2 + 2227944^2 .

It is a cyclic number.

It is not a de Polignac number, because 5891209400161 - 2⁴¹ = 3692186144609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5891209400101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9415260 + ... + 10021453.

It is an arithmetic number, because the mean of its divisors is an integer number (1472807284993).

Almost surely, 2^{5891209400161} is an apocalyptic number.

It is an amenable number.

5891209400161 is a deficient number, since it is larger than the sum of its proper divisors (19739811).

5891209400161 is a wasteful number, since it uses less digits than its factorization.

5891209400161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19739810.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 5891209400161 in words is "five trillion, eight hundred ninety-one billion, two hundred nine million, four hundred thousand, one hundred sixty-one".