137672116642 has 4 divisors (see below), whose sum is σ = 206508174966. Its totient is φ = 68836058320.

The previous prime is 137672116619. The next prime is 137672116697. The reversal of 137672116642 is 246611276731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246611276731 = 185747 ⋅1327673.

It can be written as a sum of positive squares in only one way, i.e., 134570851921 + 3101264721 = 366839^2 + 55689^2 .

It is a super-2 number, since 2×137672116642² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 137672116592 and 137672116601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34418029159 + ... + 34418029162.

Almost surely, 2^137672116642 is an apocalyptic number.

137672116642 is a deficient number, since it is larger than the sum of its proper divisors (68836058324).

137672116642 is an equidigital number, since it uses as much as digits as its factorization.

137672116642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68836058323.

The product of its digits is 508032, while the sum is 46.

The spelling of 137672116642 in words is "one hundred thirty-seven billion, six hundred seventy-two million, one hundred sixteen thousand, six hundred forty-two".