51671976710399 has 4 divisors (see below), whose sum is σ = 51672320486136. Its totient is φ = 51671632934664.

The previous prime is 51671976710371. The next prime is 51671976710401. The reversal of 51671976710399 is 99301767917615.

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 51671976710399 - 2⁸ = 51671976710143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51671976710339) 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, 171662309 + ... + 171963054.

It is an arithmetic number, because the mean of its divisors is an integer number (12918080121534).

Almost surely, 2^{51671976710399} is an apocalyptic number.

51671976710399 is a deficient number, since it is larger than the sum of its proper divisors (343775737).

51671976710399 is a wasteful number, since it uses less digits than its factorization.

51671976710399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343775736.

The product of its (nonzero) digits is 135025380, while the sum is 71.

The spelling of 51671976710399 in words is "fifty-one trillion, six hundred seventy-one billion, nine hundred seventy-six million, seven hundred ten thousand, three hundred ninety-nine".