139309211887 has 2 divisors, whose sum is σ = 139309211888. Its totient is φ = 139309211886.

The previous prime is 139309211879. The next prime is 139309211929. The reversal of 139309211887 is 788112903931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139309211887 - 2³ = 139309211879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139309214887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69654605943 + 69654605944.

It is an arithmetic number, because the mean of its divisors is an integer number (69654605944).

Almost surely, 2^139309211887 is an apocalyptic number.

139309211887 is a deficient number, since it is larger than the sum of its proper divisors (1).

139309211887 is an equidigital number, since it uses as much as digits as its factorization.

139309211887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 139309211887 in words is "one hundred thirty-nine billion, three hundred nine million, two hundred eleven thousand, eight hundred eighty-seven".