137287278797 has 4 divisors (see below), whose sum is σ = 137313518940. Its totient is φ = 137261038656.

The previous prime is 137287278761. The next prime is 137287278803. The reversal of 137287278797 is 797872782731.

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 135975825001 + 1311453796 = 368749^2 + 36214^2 .

It is a cyclic number.

It is not a de Polignac number, because 137287278797 - 2¹⁰ = 137287277773 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 (137287278727) 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, 13112222 + ... + 13122687.

It is an arithmetic number, because the mean of its divisors is an integer number (34328379735).

Almost surely, 2^137287278797 is an apocalyptic number.

It is an amenable number.

137287278797 is a deficient number, since it is larger than the sum of its proper divisors (26240143).

137287278797 is an equidigital number, since it uses as much as digits as its factorization.

137287278797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240142.

The product of its digits is 116169984, while the sum is 68.

The spelling of 137287278797 in words is "one hundred thirty-seven billion, two hundred eighty-seven million, two hundred seventy-eight thousand, seven hundred ninety-seven".