29791374857 has 2 divisors, whose sum is σ = 29791374858. Its totient is φ = 29791374856.

The previous prime is 29791374839. The next prime is 29791374871. The reversal of 29791374857 is 75847319792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14970990736 + 14820384121 = 122356^2 + 121739^2 .

It is a cyclic number.

It is not a de Polignac number, because 29791374857 - 2⁶ = 29791374793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29791374857.

It is not a weakly prime, because it can be changed into another prime (29791374757) 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, 14895687428 + 14895687429.

It is an arithmetic number, because the mean of its divisors is an integer number (14895687429).

Almost surely, 2^29791374857 is an apocalyptic number.

It is an amenable number.

29791374857 is a deficient number, since it is larger than the sum of its proper divisors (1).

29791374857 is an equidigital number, since it uses as much as digits as its factorization.

29791374857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 62.

The spelling of 29791374857 in words is "twenty-nine billion, seven hundred ninety-one million, three hundred seventy-four thousand, eight hundred fifty-seven".