71344393957 has 8 divisors (see below), whose sum is σ = 75828484160. Its totient is φ = 66933216000.

The previous prime is 71344393937. The next prime is 71344394021. The reversal of 71344393957 is 75939344317.

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 71344393957 - 2¹⁹ = 71343869669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71344393898 and 71344393907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71344393927) 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, 18226044 + ... + 18229957.

It is an arithmetic number, because the mean of its divisors is an integer number (9478560520).

Almost surely, 2^71344393957 is an apocalyptic number.

It is an amenable number.

71344393957 is a deficient number, since it is larger than the sum of its proper divisors (4484090203).

71344393957 is a wasteful number, since it uses less digits than its factorization.

71344393957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36456123.

The product of its digits is 8573040, while the sum is 55.

The spelling of 71344393957 in words is "seventy-one billion, three hundred forty-four million, three hundred ninety-three thousand, nine hundred fifty-seven".