51793314947 has 4 divisors (see below), whose sum is σ = 56501798136. Its totient is φ = 47084831760.

The previous prime is 51793314929. The next prime is 51793314967. The reversal of 51793314947 is 74941339715.

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 51793314947 - 2²⁴ = 51776537731 is a prime.

It is a super-2 number, since 2×51793314947² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51793314967) 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, 2354241578 + ... + 2354241599.

It is an arithmetic number, because the mean of its divisors is an integer number (14125449534).

Almost surely, 2^51793314947 is an apocalyptic number.

51793314947 is a deficient number, since it is larger than the sum of its proper divisors (4708483189).

51793314947 is a wasteful number, since it uses less digits than its factorization.

51793314947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708483188.

The product of its digits is 2857680, while the sum is 53.

The spelling of 51793314947 in words is "fifty-one billion, seven hundred ninety-three million, three hundred fourteen thousand, nine hundred forty-seven".