136507341961 has 3 divisors (see below), whose sum is σ = 136507711431. Its totient is φ = 136506972492.

The previous prime is 136507341953. The next prime is 136507341989. The reversal of 136507341961 is 169143705631.

The square root of 136507341961 is 369469.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 169143705631 = 17 ⋅9949629743.

It can be written as a sum of positive squares in only one way, i.e., 3296941561 + 133210400400 = 57419^2 + 364980^2 .

It is not a de Polignac number, because 136507341961 - 2³ = 136507341953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136507341991) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 184735 + ... + 554203.

It is an arithmetic number, because the mean of its divisors is an integer number (45502570477).

Almost surely, 2^136507341961 is an apocalyptic number.

136507341961 is the 369469-th square number.

136507341961 is the 184735-th centered octagonal number.

It is an amenable number.

136507341961 is a deficient number, since it is larger than the sum of its proper divisors (369470).

136507341961 is an frugal number, since it uses more digits than its factorization.

136507341961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738938 (or 369469 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 136507341961 in words is "one hundred thirty-six billion, five hundred seven million, three hundred forty-one thousand, nine hundred sixty-one".