51421878083 has 2 divisors, whose sum is σ = 51421878084. Its totient is φ = 51421878082.

The previous prime is 51421878049. The next prime is 51421878121. The reversal of 51421878083 is 38087812415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51421878083 - 2⁸ = 51421877827 is a prime.

It is not a weakly prime, because it can be changed into another prime (51421878043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25710939041 + 25710939042.

It is an arithmetic number, because the mean of its divisors is an integer number (25710939042).

Almost surely, 2^51421878083 is an apocalyptic number.

51421878083 is a deficient number, since it is larger than the sum of its proper divisors (1).

51421878083 is an equidigital number, since it uses as much as digits as its factorization.

51421878083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 51421878083 in words is "fifty-one billion, four hundred twenty-one million, eight hundred seventy-eight thousand, eighty-three".