71720002122 has 8 divisors (see below), whose sum is σ = 143440004256. Its totient is φ = 23906667372.

The previous prime is 71720002121. The next prime is 71720002127. The reversal of 71720002122 is 22120002717.

It is a sphenic number, since it is the product of 3 distinct primes.

71720002122 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 71720002092 and 71720002101.

It is not an unprimeable number, because it can be changed into a prime (71720002121) 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, 5976666838 + ... + 5976666849.

It is an arithmetic number, because the mean of its divisors is an integer number (17930000532).

Almost surely, 2^71720002122 is an apocalyptic number.

71720002122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71720002122 is a wasteful number, since it uses less digits than its factorization.

71720002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11953333692.

The product of its (nonzero) digits is 784, while the sum is 24.

Adding to 71720002122 its reverse (22120002717), we get a palindrome (93840004839).

The spelling of 71720002122 in words is "seventy-one billion, seven hundred twenty million, two thousand, one hundred twenty-two".