51015561166162 has 4 divisors (see below), whose sum is σ = 76523341749246. Its totient is φ = 25507780583080.

The previous prime is 51015561166151. The next prime is 51015561166211. The reversal of 51015561166162 is 26166116551015.

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

It can be written as a sum of positive squares in only one way, i.e., 36600334132041 + 14415227034121 = 6049821^2 + 3796739^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753890291539 + ... + 12753890291542.

Almost surely, 2^{51015561166162} is an apocalyptic number.

51015561166162 is a deficient number, since it is larger than the sum of its proper divisors (25507780583084).

51015561166162 is a wasteful number, since it uses less digits than its factorization.

51015561166162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25507780583083.

The product of its (nonzero) digits is 324000, while the sum is 46.

The spelling of 51015561166162 in words is "fifty-one trillion, fifteen billion, five hundred sixty-one million, one hundred sixty-six thousand, one hundred sixty-two".