5161957944 has 64 divisors (see below), whose sum is σ = 15161005440. Its totient is φ = 1443903360.

The previous prime is 5161957897. The next prime is 5161957993. The reversal of 5161957944 is 4497591615.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 748602 + ... + 755465.

It is an arithmetic number, because the mean of its divisors is an integer number (236890710).

Almost surely, 2^5161957944 is an apocalyptic number.

It is an amenable number.

5161957944 is an abundant number, since it is smaller than the sum of its proper divisors (9999047496).

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

5161957944 is a wasteful number, since it uses less digits than its factorization.

5161957944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504100 (or 1504096 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The square root of 5161957944 is about 71846.7671088964. The cubic root of 5161957944 is about 1728.2430561957.

The spelling of 5161957944 in words is "five billion, one hundred sixty-one million, nine hundred fifty-seven thousand, nine hundred forty-four".