71368970399 has 4 divisors (see below), whose sum is σ = 74471969136. Its totient is φ = 68265971664.

The previous prime is 71368970389. The next prime is 71368970423. The reversal of 71368970399 is 99307986317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99307986317 = 67 ⋅1482208751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71368970399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71368970329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551499334 + ... + 1551499379.

It is an arithmetic number, because the mean of its divisors is an integer number (18617992284).

Almost surely, 2^71368970399 is an apocalyptic number.

71368970399 is a deficient number, since it is larger than the sum of its proper divisors (3102998737).

71368970399 is a wasteful number, since it uses less digits than its factorization.

71368970399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102998736.

The product of its (nonzero) digits is 15431472, while the sum is 62.

The spelling of 71368970399 in words is "seventy-one billion, three hundred sixty-eight million, nine hundred seventy thousand, three hundred ninety-nine".