51020199983 has 2 divisors, whose sum is σ = 51020199984. Its totient is φ = 51020199982.

The previous prime is 51020199959. The next prime is 51020200013. The reversal of 51020199983 is 38999102015.

51020199983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51020199983 - 2²⁸ = 50751764527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51020199283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510099991 + 25510099992.

It is an arithmetic number, because the mean of its divisors is an integer number (25510099992).

Almost surely, 2^51020199983 is an apocalyptic number.

51020199983 is a deficient number, since it is larger than the sum of its proper divisors (1).

51020199983 is an equidigital number, since it uses as much as digits as its factorization.

51020199983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 51020199983 in words is "fifty-one billion, twenty million, one hundred ninety-nine thousand, nine hundred eighty-three".