137986791959 has 4 divisors (see below), whose sum is σ = 139409336304. Its totient is φ = 136564247616.

The previous prime is 137986791907. The next prime is 137986791991. The reversal of 137986791959 is 959197689731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137986791959 - 2⁸ = 137986791703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137986791559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711272027 + ... + 711272220.

It is an arithmetic number, because the mean of its divisors is an integer number (34852334076).

Almost surely, 2^137986791959 is an apocalyptic number.

137986791959 is a deficient number, since it is larger than the sum of its proper divisors (1422544345).

137986791959 is an equidigital number, since it uses as much as digits as its factorization.

137986791959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422544344.

The product of its digits is 231472080, while the sum is 74.

The spelling of 137986791959 in words is "one hundred thirty-seven billion, nine hundred eighty-six million, seven hundred ninety-one thousand, nine hundred fifty-nine".