139466207977 has 2 divisors, whose sum is σ = 139466207978. Its totient is φ = 139466207976.

The previous prime is 139466207957. The next prime is 139466207999. The reversal of 139466207977 is 779702664931.

139466207977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135673618921 + 3792589056 = 368339^2 + 61584^2 .

It is a cyclic number.

It is not a de Polignac number, because 139466207977 - 2¹⁹ = 139465683689 is a prime.

It is not a weakly prime, because it can be changed into another prime (139466207957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69733103988 + 69733103989.

It is an arithmetic number, because the mean of its divisors is an integer number (69733103989).

Almost surely, 2^139466207977 is an apocalyptic number.

It is an amenable number.

139466207977 is a deficient number, since it is larger than the sum of its proper divisors (1).

139466207977 is an equidigital number, since it uses as much as digits as its factorization.

139466207977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24004512, while the sum is 61.

The spelling of 139466207977 in words is "one hundred thirty-nine billion, four hundred sixty-six million, two hundred seven thousand, nine hundred seventy-seven".