15961043973 has 8 divisors (see below), whose sum is σ = 24321590848. Its totient is φ = 9120596544.

The previous prime is 15961043957. The next prime is 15961043981. The reversal of 15961043973 is 37934016951.

15961043973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15961043973 - 2⁴ = 15961043957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15961043953) by changing a digit.

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, 380024836 + ... + 380024877.

It is an arithmetic number, because the mean of its divisors is an integer number (3040198856).

Almost surely, 2^15961043973 is an apocalyptic number.

It is an amenable number.

15961043973 is a deficient number, since it is larger than the sum of its proper divisors (8360546875).

15961043973 is an equidigital number, since it uses as much as digits as its factorization.

15961043973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760049723.

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 15961043973 in words is "fifteen billion, nine hundred sixty-one million, forty-three thousand, nine hundred seventy-three".