139936479811 has 2 divisors, whose sum is σ = 139936479812. Its totient is φ = 139936479810.

The previous prime is 139936479791. The next prime is 139936479821. The reversal of 139936479811 is 118974639931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139936479811 - 2³³ = 131346545219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139936479811.

It is not a weakly prime, because it can be changed into another prime (139936479821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69968239905 + 69968239906.

It is an arithmetic number, because the mean of its divisors is an integer number (69968239906).

Almost surely, 2^139936479811 is an apocalyptic number.

139936479811 is a deficient number, since it is larger than the sum of its proper divisors (1).

139936479811 is an equidigital number, since it uses as much as digits as its factorization.

139936479811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 61.

The spelling of 139936479811 in words is "one hundred thirty-nine billion, nine hundred thirty-six million, four hundred seventy-nine thousand, eight hundred eleven".