129819347057 has 2 divisors, whose sum is σ = 129819347058. Its totient is φ = 129819347056.

The previous prime is 129819347033. The next prime is 129819347081. The reversal of 129819347057 is 750743918921.

It is a balanced prime because it is at equal distance from previous prime (129819347033) and next prime (129819347081).

It can be written as a sum of positive squares in only one way, i.e., 80355807841 + 49463539216 = 283471^2 + 222404^2 .

It is an emirp because it is prime and its reverse (750743918921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129819347057 is a prime.

It is a super-2 number, since 2×129819347057² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129819346993 and 129819347011.

It is not a weakly prime, because it can be changed into another prime (129819347087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64909673528 + 64909673529.

It is an arithmetic number, because the mean of its divisors is an integer number (64909673529).

Almost surely, 2^129819347057 is an apocalyptic number.

It is an amenable number.

129819347057 is a deficient number, since it is larger than the sum of its proper divisors (1).

129819347057 is an equidigital number, since it uses as much as digits as its factorization.

129819347057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 129819347057 in words is "one hundred twenty-nine billion, eight hundred nineteen million, three hundred forty-seven thousand, fifty-seven".