71142408277 has 4 divisors (see below), whose sum is σ = 71142942060. Its totient is φ = 71141874496.

The previous prime is 71142408251. The next prime is 71142408283. The reversal of 71142408277 is 77280424117.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8589397041 + 62553011236 = 92679^2 + 250106^2 .

It is a cyclic number.

It is not a de Polignac number, because 71142408277 - 2²⁷ = 71008190549 is a prime.

It is a super-2 number, since 2×71142408277² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71142408247) 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, 119343 + ... + 395635.

It is an arithmetic number, because the mean of its divisors is an integer number (17785735515).

Almost surely, 2^71142408277 is an apocalyptic number.

It is an amenable number.

71142408277 is a deficient number, since it is larger than the sum of its proper divisors (533783).

71142408277 is a wasteful number, since it uses less digits than its factorization.

71142408277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533782.

The product of its (nonzero) digits is 175616, while the sum is 43.

The spelling of 71142408277 in words is "seventy-one billion, one hundred forty-two million, four hundred eight thousand, two hundred seventy-seven".