137228863729 has 4 divisors (see below), whose sum is σ = 137314794484. Its totient is φ = 137142932976.

The previous prime is 137228863693. The next prime is 137228863789. The reversal of 137228863729 is 927368822731.

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 55462605025 + 81766258704 = 235505^2 + 285948^2 .

It is a cyclic number.

It is not a de Polignac number, because 137228863729 - 2⁷ = 137228863601 is a prime.

It is a super-2 number, since 2×137228863729² (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 (137228863789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42962982 + ... + 42966175.

It is an arithmetic number, because the mean of its divisors is an integer number (34328698621).

Almost surely, 2^137228863729 is an apocalyptic number.

It is an amenable number.

137228863729 is a deficient number, since it is larger than the sum of its proper divisors (85930755).

137228863729 is an equidigital number, since it uses as much as digits as its factorization.

137228863729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85930754.

The product of its digits is 12192768, while the sum is 58.

The spelling of 137228863729 in words is "one hundred thirty-seven billion, two hundred twenty-eight million, eight hundred sixty-three thousand, seven hundred twenty-nine".