139319292977 has 2 divisors, whose sum is σ = 139319292978. Its totient is φ = 139319292976.

The previous prime is 139319292967. The next prime is 139319293013. The reversal of 139319292977 is 779292913931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138919452961 + 399840016 = 372719^2 + 19996^2 .

It is a cyclic number.

It is not a de Polignac number, because 139319292977 - 2⁶ = 139319292913 is a prime.

It is a super-2 number, since 2×139319292977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139319292907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69659646488 + 69659646489.

It is an arithmetic number, because the mean of its divisors is an integer number (69659646489).

Almost surely, 2^139319292977 is an apocalyptic number.

It is an amenable number.

139319292977 is a deficient number, since it is larger than the sum of its proper divisors (1).

139319292977 is an equidigital number, since it uses as much as digits as its factorization.

139319292977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11573604, while the sum is 62.

The spelling of 139319292977 in words is "one hundred thirty-nine billion, three hundred nineteen million, two hundred ninety-two thousand, nine hundred seventy-seven".