71838901429 has 2 divisors, whose sum is σ = 71838901430. Its totient is φ = 71838901428.

The previous prime is 71838901259. The next prime is 71838901451. The reversal of 71838901429 is 92410983817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66874994404 + 4963907025 = 258602^2 + 70455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71838901429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71838901829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35919450714 + 35919450715.

It is an arithmetic number, because the mean of its divisors is an integer number (35919450715).

Almost surely, 2^71838901429 is an apocalyptic number.

It is an amenable number.

71838901429 is a deficient number, since it is larger than the sum of its proper divisors (1).

71838901429 is an equidigital number, since it uses as much as digits as its factorization.

71838901429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 71838901429 in words is "seventy-one billion, eight hundred thirty-eight million, nine hundred one thousand, four hundred twenty-nine".