137347774217 has 4 divisors (see below), whose sum is σ = 137451748116. Its totient is φ = 137243800320.

The previous prime is 137347774183. The next prime is 137347774247. The reversal of 137347774217 is 712477743731.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 134293664521 + 3054109696 = 366461^2 + 55264^2 .

It is a cyclic number.

It is not a de Polignac number, because 137347774217 - 2⁶ = 137347774153 is a prime.

It is a super-2 number, since 2×137347774217² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137347774247) 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, 51984968 + ... + 51987609.

It is an arithmetic number, because the mean of its divisors is an integer number (34362937029).

Almost surely, 2^137347774217 is an apocalyptic number.

It is an amenable number.

137347774217 is a deficient number, since it is larger than the sum of its proper divisors (103973899).

137347774217 is a wasteful number, since it uses less digits than its factorization.

137347774217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103973898.

The product of its digits is 4840416, while the sum is 53.

The spelling of 137347774217 in words is "one hundred thirty-seven billion, three hundred forty-seven million, seven hundred seventy-four thousand, two hundred seventeen".