51137200042571 has 4 divisors (see below), whose sum is σ = 51157878249672. Its totient is φ = 51116521835472.

The previous prime is 51137200042567. The next prime is 51137200042583. The reversal of 51137200042571 is 17524000273115.

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

It is a cyclic number.

It is not a de Polignac number, because 51137200042571 - 2² = 51137200042567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51137200002571) 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, 10339099841 + ... + 10339104786.

It is an arithmetic number, because the mean of its divisors is an integer number (12789469562418).

Almost surely, 2^{51137200042571} is an apocalyptic number.

51137200042571 is a deficient number, since it is larger than the sum of its proper divisors (20678207101).

51137200042571 is a wasteful number, since it uses less digits than its factorization.

51137200042571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20678207100.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 51137200042571 in words is "fifty-one trillion, one hundred thirty-seven billion, two hundred million, forty-two thousand, five hundred seventy-one".