6161971365771 has 64 divisors (see below), whose sum is σ = 9615933358080. Its totient is φ = 3477185832960.

The previous prime is 6161971365749. The next prime is 6161971365779. The reversal of 6161971365771 is 1775631791616.

It is not a de Polignac number, because 6161971365771 - 2¹⁵ = 6161971333003 is a prime.

It is a super-2 number, since 2×6161971365771² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6161971365779) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3059871 + ... + 4656903.

It is an arithmetic number, because the mean of its divisors is an integer number (150248958720).

Almost surely, 2^{6161971365771} is an apocalyptic number.

6161971365771 is a deficient number, since it is larger than the sum of its proper divisors (3453961992309).

6161971365771 is a wasteful number, since it uses less digits than its factorization.

6161971365771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597236.

The product of its digits is 10001880, while the sum is 60.

The spelling of 6161971365771 in words is "six trillion, one hundred sixty-one billion, nine hundred seventy-one million, three hundred sixty-five thousand, seven hundred seventy-one".