13958866973 has 2 divisors, whose sum is σ = 13958866974. Its totient is φ = 13958866972.

The previous prime is 13958866969. The next prime is 13958867051. The reversal of 13958866973 is 37966885931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13930372729 + 28494244 = 118027^2 + 5338^2 .

It is a cyclic number.

It is not a de Polignac number, because 13958866973 - 2² = 13958866969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13958866913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979433486 + 6979433487.

It is an arithmetic number, because the mean of its divisors is an integer number (6979433487).

Almost surely, 2^13958866973 is an apocalyptic number.

It is an amenable number.

13958866973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13958866973 is an equidigital number, since it uses as much as digits as its factorization.

13958866973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 65.

The spelling of 13958866973 in words is "thirteen billion, nine hundred fifty-eight million, eight hundred sixty-six thousand, nine hundred seventy-three".