139108634591 has 2 divisors, whose sum is σ = 139108634592. Its totient is φ = 139108634590.

The previous prime is 139108634537. The next prime is 139108634593. The reversal of 139108634591 is 195436801931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139108634591 - 2⁶ = 139108634527 is a prime.

Together with 139108634593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139108634593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69554317295 + 69554317296.

It is an arithmetic number, because the mean of its divisors is an integer number (69554317296).

Almost surely, 2^139108634591 is an apocalyptic number.

139108634591 is a deficient number, since it is larger than the sum of its proper divisors (1).

139108634591 is an equidigital number, since it uses as much as digits as its factorization.

139108634591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 139108634591 in words is "one hundred thirty-nine billion, one hundred eight million, six hundred thirty-four thousand, five hundred ninety-one".