137604405761 has 4 divisors (see below), whose sum is σ = 142349385300. Its totient is φ = 132859426224.

The previous prime is 137604405751. The next prime is 137604405847. The reversal of 137604405761 is 167504406731.

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 44041219600 + 93563186161 = 209860^2 + 305881^2 .

It is a cyclic number.

It is not a de Polignac number, because 137604405761 - 2³⁰ = 136530663937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137604405751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2372489726 + ... + 2372489783.

It is an arithmetic number, because the mean of its divisors is an integer number (35587346325).

Almost surely, 2^137604405761 is an apocalyptic number.

It is an amenable number.

137604405761 is a deficient number, since it is larger than the sum of its proper divisors (4744979539).

137604405761 is an equidigital number, since it uses as much as digits as its factorization.

137604405761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744979538.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 137604405761 in words is "one hundred thirty-seven billion, six hundred four million, four hundred five thousand, seven hundred sixty-one".