29519421457 has 2 divisors, whose sum is σ = 29519421458. Its totient is φ = 29519421456.

The previous prime is 29519421409. The next prime is 29519421479. The reversal of 29519421457 is 75412491592.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29273841216 + 245580241 = 171096^2 + 15671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29519421457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29519421457.

It is not a weakly prime, because it can be changed into another prime (29519421257) 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, 14759710728 + 14759710729.

It is an arithmetic number, because the mean of its divisors is an integer number (14759710729).

Almost surely, 2^29519421457 is an apocalyptic number.

It is an amenable number.

29519421457 is a deficient number, since it is larger than the sum of its proper divisors (1).

29519421457 is an equidigital number, since it uses as much as digits as its factorization.

29519421457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 49.

The spelling of 29519421457 in words is "twenty-nine billion, five hundred nineteen million, four hundred twenty-one thousand, four hundred fifty-seven".