956271686866 has 36 divisors (see below), whose sum is σ = 1573234292682. Its totient is φ = 434417479552.

The previous prime is 956271686857. The next prime is 956271686869. The reversal of 956271686866 is 668686172659.

It can be written as a sum of positive squares in 3 ways, for example, as 910488098025 + 45783588841 = 954195^2 + 213971^2 .

It is a junction number, because it is equal to n+sod(n) for n = 956271686795 and 956271686804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956271686869) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 165356211 + ... + 165361993.

Almost surely, 2^956271686866 is an apocalyptic number.

956271686866 is a deficient number, since it is larger than the sum of its proper divisors (616962605816).

956271686866 is an frugal number, since it uses more digits than its factorization.

956271686866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643 (or 5831 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 70.

The spelling of 956271686866 in words is "nine hundred fifty-six billion, two hundred seventy-one million, six hundred eighty-six thousand, eight hundred sixty-six".