139020263377 has 2 divisors, whose sum is σ = 139020263378. Its totient is φ = 139020263376.

The previous prime is 139020263287. The next prime is 139020263381. The reversal of 139020263377 is 773362020931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131907702481 + 7112560896 = 363191^2 + 84336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139020263377 is a prime.

It is not a weakly prime, because it can be changed into another prime (139020263177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69510131688 + 69510131689.

It is an arithmetic number, because the mean of its divisors is an integer number (69510131689).

Almost surely, 2^139020263377 is an apocalyptic number.

It is an amenable number.

139020263377 is a deficient number, since it is larger than the sum of its proper divisors (1).

139020263377 is an equidigital number, since it uses as much as digits as its factorization.

139020263377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 43.

The spelling of 139020263377 in words is "one hundred thirty-nine billion, twenty million, two hundred sixty-three thousand, three hundred seventy-seven".