137682961678 has 4 divisors (see below), whose sum is σ = 206524442520. Its totient is φ = 68841480838.

The previous prime is 137682961651. The next prime is 137682961679. The reversal of 137682961678 is 876169286731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876169286731 = 5189 ⋅168851279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137682961679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34420740418 + ... + 34420740421.

It is an arithmetic number, because the mean of its divisors is an integer number (51631110630).

Almost surely, 2^137682961678 is an apocalyptic number.

137682961678 is a deficient number, since it is larger than the sum of its proper divisors (68841480842).

137682961678 is an equidigital number, since it uses as much as digits as its factorization.

137682961678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68841480841.

The product of its digits is 36578304, while the sum is 64.

The spelling of 137682961678 in words is "one hundred thirty-seven billion, six hundred eighty-two million, nine hundred sixty-one thousand, six hundred seventy-eight".