137917244018 has 4 divisors (see below), whose sum is σ = 206875866030. Its totient is φ = 68958622008.

The previous prime is 137917243991. The next prime is 137917244033. The reversal of 137917244018 is 810442719731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810442719731 = 1063 ⋅762410837.

It can be written as a sum of positive squares in only one way, i.e., 135443872729 + 2473371289 = 368027^2 + 49733^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34479311003 + ... + 34479311006.

Almost surely, 2^137917244018 is an apocalyptic number.

137917244018 is a deficient number, since it is larger than the sum of its proper divisors (68958622012).

137917244018 is an equidigital number, since it uses as much as digits as its factorization.

137917244018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68958622011.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 137917244018 in words is "one hundred thirty-seven billion, nine hundred seventeen million, two hundred forty-four thousand, eighteen".