1956944496591 has 12 divisors (see below), whose sum is σ = 3230511550032. Its totient is φ = 1118253998016.

The previous prime is 1956944496569. The next prime is 1956944496629.

It is a happy number.

1956944496591 is a `hidden beast` number, since 1 + 9 + 5 + 6 + 9 + 44 + 496 + 5 + 91 = 666.

1956944496591 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1956944496591 - 2¹⁸ = 1956944234447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956944456591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15531305466 + ... + 15531305591.

It is an arithmetic number, because the mean of its divisors is an integer number (269209295836).

Almost surely, 2^{1956944496591} is an apocalyptic number.

1956944496591 is a deficient number, since it is larger than the sum of its proper divisors (1273567053441).

1956944496591 is a wasteful number, since it uses less digits than its factorization.

1956944496591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31062611070 (or 31062611067 counting only the distinct ones).

The product of its digits is 377913600, while the sum is 72.

The spelling of 1956944496591 in words is "one trillion, nine hundred fifty-six billion, nine hundred forty-four million, four hundred ninety-six thousand, five hundred ninety-one".