71947929799 has 16 divisors (see below), whose sum is σ = 74968058880. Its totient is φ = 68998664160.

The previous prime is 71947929797. The next prime is 71947929811. The reversal of 71947929799 is 99792974917.

It is a cyclic number.

It is not a de Polignac number, because 71947929799 - 2¹ = 71947929797 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 (71947929797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706312 + ... + 801730.

It is an arithmetic number, because the mean of its divisors is an integer number (4685503680).

Almost surely, 2^71947929799 is an apocalyptic number.

71947929799 is a deficient number, since it is larger than the sum of its proper divisors (3020129081).

71947929799 is a wasteful number, since it uses less digits than its factorization.

71947929799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95790.

The product of its digits is 162030456, while the sum is 73.

The spelling of 71947929799 in words is "seventy-one billion, nine hundred forty-seven million, nine hundred twenty-nine thousand, seven hundred ninety-nine".