51782015429 has 2 divisors, whose sum is σ = 51782015430. Its totient is φ = 51782015428.

The previous prime is 51782015407. The next prime is 51782015443. The reversal of 51782015429 is 92451028715.

51782015429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51709850404 + 72165025 = 227398^2 + 8495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51782015429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51782015429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51782015449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25891007714 + 25891007715.

It is an arithmetic number, because the mean of its divisors is an integer number (25891007715).

Almost surely, 2^51782015429 is an apocalyptic number.

It is an amenable number.

51782015429 is a deficient number, since it is larger than the sum of its proper divisors (1).

51782015429 is an equidigital number, since it uses as much as digits as its factorization.

51782015429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 51782015429 in words is "fifty-one billion, seven hundred eighty-two million, fifteen thousand, four hundred twenty-nine".