71142393446 has 8 divisors (see below), whose sum is σ = 106834446264. Its totient is φ = 35530911360.

The previous prime is 71142393409. The next prime is 71142393457. The reversal of 71142393446 is 64439324117.

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

It is a super-2 number, since 2×71142393446² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71142393397 and 71142393406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20140475 + ... + 20144006.

It is an arithmetic number, because the mean of its divisors is an integer number (13354305783).

Almost surely, 2^71142393446 is an apocalyptic number.

71142393446 is a deficient number, since it is larger than the sum of its proper divisors (35692052818).

71142393446 is a wasteful number, since it uses less digits than its factorization.

71142393446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40285366.

The product of its digits is 435456, while the sum is 44.

The spelling of 71142393446 in words is "seventy-one billion, one hundred forty-two million, three hundred ninety-three thousand, four hundred forty-six".