71440253709 has 16 divisors (see below), whose sum is σ = 103933026624. Its totient is φ = 43288819200.

The previous prime is 71440253699. The next prime is 71440253771. The reversal of 71440253709 is 90735204417.

It is not a de Polignac number, because 71440253709 - 2⁴ = 71440253693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440253789) 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, 30694 + ... + 379239.

It is an arithmetic number, because the mean of its divisors is an integer number (6495814164).

Almost surely, 2^71440253709 is an apocalyptic number.

It is an amenable number.

71440253709 is a deficient number, since it is larger than the sum of its proper divisors (32492772915).

71440253709 is a wasteful number, since it uses less digits than its factorization.

71440253709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415228.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 71440253709 in words is "seventy-one billion, four hundred forty million, two hundred fifty-three thousand, seven hundred nine".