139290638827 has 2 divisors, whose sum is σ = 139290638828. Its totient is φ = 139290638826.

The previous prime is 139290638743. The next prime is 139290638831. The reversal of 139290638827 is 728836092931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139290638827 is a prime.

It is not a weakly prime, because it can be changed into another prime (139290638867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69645319413 + 69645319414.

It is an arithmetic number, because the mean of its divisors is an integer number (69645319414).

Almost surely, 2^139290638827 is an apocalyptic number.

139290638827 is a deficient number, since it is larger than the sum of its proper divisors (1).

139290638827 is an equidigital number, since it uses as much as digits as its factorization.

139290638827 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 139290638827 in words is "one hundred thirty-nine billion, two hundred ninety million, six hundred thirty-eight thousand, eight hundred twenty-seven".