13981859077 has 2 divisors, whose sum is σ = 13981859078. Its totient is φ = 13981859076.

The previous prime is 13981859063. The next prime is 13981859093. The reversal of 13981859077 is 77095818931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13973367681 + 8491396 = 118209^2 + 2914^2 .

It is a cyclic number.

It is not a de Polignac number, because 13981859077 - 2⁷ = 13981858949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13981859027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6990929538 + 6990929539.

It is an arithmetic number, because the mean of its divisors is an integer number (6990929539).

Almost surely, 2^13981859077 is an apocalyptic number.

It is an amenable number.

13981859077 is a deficient number, since it is larger than the sum of its proper divisors (1).

13981859077 is an equidigital number, since it uses as much as digits as its factorization.

13981859077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 13981859077 in words is "thirteen billion, nine hundred eighty-one million, eight hundred fifty-nine thousand, seventy-seven".