51838295947 has 2 divisors, whose sum is σ = 51838295948. Its totient is φ = 51838295946.

The previous prime is 51838295909. The next prime is 51838296017. The reversal of 51838295947 is 74959283815.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51838295947 is a prime.

It is a super-3 number, since 3×51838295947³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (51838295447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25919147973 + 25919147974.

It is an arithmetic number, because the mean of its divisors is an integer number (25919147974).

Almost surely, 2^51838295947 is an apocalyptic number.

51838295947 is a deficient number, since it is larger than the sum of its proper divisors (1).

51838295947 is an equidigital number, since it uses as much as digits as its factorization.

51838295947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21772800, while the sum is 61.

The spelling of 51838295947 in words is "fifty-one billion, eight hundred thirty-eight million, two hundred ninety-five thousand, nine hundred forty-seven".