139278268903 has 2 divisors, whose sum is σ = 139278268904. Its totient is φ = 139278268902.

The previous prime is 139278268897. The next prime is 139278268919. The reversal of 139278268903 is 309862872931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139278268903 - 2³³ = 130688334311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139278269903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69639134451 + 69639134452.

It is an arithmetic number, because the mean of its divisors is an integer number (69639134452).

Almost surely, 2^139278268903 is an apocalyptic number.

139278268903 is a deficient number, since it is larger than the sum of its proper divisors (1).

139278268903 is an equidigital number, since it uses as much as digits as its factorization.

139278268903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 139278268903 in words is "one hundred thirty-nine billion, two hundred seventy-eight million, two hundred sixty-eight thousand, nine hundred three".