71103344257 has 4 divisors (see below), whose sum is σ = 77567284656. Its totient is φ = 64639403860.

The previous prime is 71103344239. The next prime is 71103344303. The reversal of 71103344257 is 75244330117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71103344257 - 2¹¹ = 71103342209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71103344357) 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, 3231970183 + ... + 3231970204.

It is an arithmetic number, because the mean of its divisors is an integer number (19391821164).

Almost surely, 2^71103344257 is an apocalyptic number.

It is an amenable number.

71103344257 is a deficient number, since it is larger than the sum of its proper divisors (6463940399).

71103344257 is a wasteful number, since it uses less digits than its factorization.

71103344257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463940398.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 71103344257 in words is "seventy-one billion, one hundred three million, three hundred forty-four thousand, two hundred fifty-seven".