51020433305 has 16 divisors (see below), whose sum is σ = 62997353424. Its totient is φ = 39649708800.

The previous prime is 51020433283. The next prime is 51020433329. The reversal of 51020433305 is 50333402015.

It can be written as a sum of positive squares in 8 ways, for example, as 12359435929 + 38660997376 = 111173^2 + 196624^2 .

It is not a de Polignac number, because 51020433305 - 2⁸ = 51020433049 is a prime.

It is a super-2 number, since 2×51020433305² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 926354 + ... + 979883.

It is an arithmetic number, because the mean of its divisors is an integer number (3937334589).

Almost surely, 2^51020433305 is an apocalyptic number.

It is an amenable number.

51020433305 is a deficient number, since it is larger than the sum of its proper divisors (11976920119).

51020433305 is a wasteful number, since it uses less digits than its factorization.

51020433305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906396.

The product of its (nonzero) digits is 5400, while the sum is 26.

The spelling of 51020433305 in words is "fifty-one billion, twenty million, four hundred thirty-three thousand, three hundred five".