6890171321650 has 12 divisors (see below), whose sum is σ = 12815718658362. Its totient is φ = 2756068528640.

The previous prime is 6890171321641. The next prime is 6890171321653. The reversal of 6890171321650 is 561231710986.

It can be written as a sum of positive squares in 3 ways, for example, as 5037003682929 + 1853167638721 = 2244327^2 + 1361311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6890171321594 and 6890171321603.

It is not an unprimeable number, because it can be changed into a prime (6890171321653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68901713167 + ... + 68901713266.

Almost surely, 2^{6890171321650} is an apocalyptic number.

6890171321650 is a deficient number, since it is larger than the sum of its proper divisors (5925547336712).

6890171321650 is a wasteful number, since it uses less digits than its factorization.

6890171321650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137803426445 (or 137803426440 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 6890171321650 in words is "six trillion, eight hundred ninety billion, one hundred seventy-one million, three hundred twenty-one thousand, six hundred fifty".