6161261320 has 32 divisors (see below), whose sum is σ = 14052746520. Its totient is φ = 2430743040.

The previous prime is 6161261317. The next prime is 6161261341. The reversal of 6161261320 is 231621616.

It can be written as a sum of positive squares in 4 ways, for example, as 4473201924 + 1688059396 = 66882^2 + 41086^2 .

It is a super-2 number, since 2×6161261320² = 75922282106656284800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052091 + ... + 1057930.

Almost surely, 2^6161261320 is an apocalyptic number.

It is an amenable number.

6161261320 is an abundant number, since it is smaller than the sum of its proper divisors (7891485200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6161261320 is a wasteful number, since it uses less digits than its factorization.

6161261320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110105 (or 2110101 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6161261320 is about 78493.7024225511. The cubic root of 6161261320 is about 1833.2563994897.

Adding to 6161261320 its reverse (231621616), we get a palindrome (6392882936).

The spelling of 6161261320 in words is "six billion, one hundred sixty-one million, two hundred sixty-one thousand, three hundred twenty".