6371720026161 has 16 divisors (see below), whose sum is σ = 9798363696000. Its totient is φ = 3607579358208.

The previous prime is 6371720026159. The next prime is 6371720026181. The reversal of 6371720026161 is 1616200271736.

It is a happy number.

It is not a de Polignac number, because 6371720026161 - 2¹ = 6371720026159 is a prime.

It is a super-2 number, since 2×6371720026161² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6371720026151) 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, 1391810736 + ... + 1391815313.

It is an arithmetic number, because the mean of its divisors is an integer number (612397731000).

Almost surely, 2^{6371720026161} is an apocalyptic number.

It is an amenable number.

6371720026161 is a deficient number, since it is larger than the sum of its proper divisors (3426643669839).

6371720026161 is a wasteful number, since it uses less digits than its factorization.

6371720026161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783626168.

The product of its (nonzero) digits is 127008, while the sum is 42.

Adding to 6371720026161 its reverse (1616200271736), we get a palindrome (7987920297897).

The spelling of 6371720026161 in words is "six trillion, three hundred seventy-one billion, seven hundred twenty million, twenty-six thousand, one hundred sixty-one".