71478420446 has 8 divisors (see below), whose sum is σ = 107365112400. Its totient is φ = 35690049648.

The previous prime is 71478420427. The next prime is 71478420449. The reversal of 71478420446 is 64402487417.

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

It is a self number, because there is not a number n which added to its sum of digits gives 71478420446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71478420449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24578471 + ... + 24581378.

It is an arithmetic number, because the mean of its divisors is an integer number (13420639050).

Almost surely, 2^71478420446 is an apocalyptic number.

71478420446 is a deficient number, since it is larger than the sum of its proper divisors (35886691954).

71478420446 is a wasteful number, since it uses less digits than its factorization.

71478420446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49160578.

The product of its (nonzero) digits is 1204224, while the sum is 47.

The spelling of 71478420446 in words is "seventy-one billion, four hundred seventy-eight million, four hundred twenty thousand, four hundred forty-six".