139268270497 has 2 divisors, whose sum is σ = 139268270498. Its totient is φ = 139268270496.

The previous prime is 139268270489. The next prime is 139268270509. The reversal of 139268270497 is 794072862931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86884047121 + 52384223376 = 294761^2 + 228876^2 .

It is an emirp because it is prime and its reverse (794072862931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139268270497 - 2³ = 139268270489 is a prime.

It is not a weakly prime, because it can be changed into another prime (139268279497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69634135248 + 69634135249.

It is an arithmetic number, because the mean of its divisors is an integer number (69634135249).

Almost surely, 2^139268270497 is an apocalyptic number.

It is an amenable number.

139268270497 is a deficient number, since it is larger than the sum of its proper divisors (1).

139268270497 is an equidigital number, since it uses as much as digits as its factorization.

139268270497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 139268270497 in words is "one hundred thirty-nine billion, two hundred sixty-eight million, two hundred seventy thousand, four hundred ninety-seven".