71242253933 has 8 divisors (see below), whose sum is σ = 71447715000. Its totient is φ = 71037001728.

The previous prime is 71242253893. The next prime is 71242253959. The reversal of 71242253933 is 33935224217.

It can be written as a sum of positive squares in 4 ways, for example, as 15414960649 + 55827293284 = 124157^2 + 236278^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71242253933 - 2¹⁰ = 71242252909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71242258933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644285 + ... + 746717.

It is an arithmetic number, because the mean of its divisors is an integer number (8930964375).

Almost surely, 2^71242253933 is an apocalyptic number.

It is an amenable number.

71242253933 is a deficient number, since it is larger than the sum of its proper divisors (205461067).

71242253933 is a wasteful number, since it uses less digits than its factorization.

71242253933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104431.

The product of its digits is 272160, while the sum is 41.

The spelling of 71242253933 in words is "seventy-one billion, two hundred forty-two million, two hundred fifty-three thousand, nine hundred thirty-three".