71929901101 has 4 divisors (see below), whose sum is σ = 76161071772. Its totient is φ = 67698730432.

The previous prime is 71929901081. The next prime is 71929901107. The reversal of 71929901101 is 10110992917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42137415076 + 29792486025 = 205274^2 + 172605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71929901101 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71929901107) 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 in 3 ways as a sum of consecutive naturals, for example, 2115585310 + ... + 2115585343.

It is an arithmetic number, because the mean of its divisors is an integer number (19040267943).

Almost surely, 2^71929901101 is an apocalyptic number.

It is an amenable number.

71929901101 is a deficient number, since it is larger than the sum of its proper divisors (4231170671).

71929901101 is a wasteful number, since it uses less digits than its factorization.

71929901101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231170670.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 71929901101 in words is "seventy-one billion, nine hundred twenty-nine million, nine hundred one thousand, one hundred one".