51919030964173 has 4 divisors (see below), whose sum is σ = 51919051556448. Its totient is φ = 51919010371900.

The previous prime is 51919030964081. The next prime is 51919030964183. The reversal of 51919030964173 is 37146903091915.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51919030964173 - 2⁴¹ = 49720007708621 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51919030964183) 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, 5883961 + ... + 11766862.

It is an arithmetic number, because the mean of its divisors is an integer number (12979762889112).

Almost surely, 2^{51919030964173} is an apocalyptic number.

It is an amenable number.

51919030964173 is a deficient number, since it is larger than the sum of its proper divisors (20592275).

51919030964173 is a wasteful number, since it uses less digits than its factorization.

51919030964173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20592274.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 51919030964173 in words is "fifty-one trillion, nine hundred nineteen billion, thirty million, nine hundred sixty-four thousand, one hundred seventy-three".