137312671391 has 4 divisors (see below), whose sum is σ = 156928767312. Its totient is φ = 117696575472.

The previous prime is 137312671373. The next prime is 137312671393. The reversal of 137312671391 is 193176213731.

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

It is a de Polignac number, because none of the positive numbers 2^k-137312671391 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 (137312671393) 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, 9808047950 + ... + 9808047963.

It is an arithmetic number, because the mean of its divisors is an integer number (39232191828).

Almost surely, 2^137312671391 is an apocalyptic number.

137312671391 is a deficient number, since it is larger than the sum of its proper divisors (19616095921).

137312671391 is an equidigital number, since it uses as much as digits as its factorization.

137312671391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19616095920.

The product of its digits is 142884, while the sum is 44.

The spelling of 137312671391 in words is "one hundred thirty-seven billion, three hundred twelve million, six hundred seventy-one thousand, three hundred ninety-one".