71213457044 has 24 divisors (see below), whose sum is σ = 127601036640. Its totient is φ = 34757047584.

The previous prime is 71213457037. The next prime is 71213457059. The reversal of 71213457044 is 44075431217.

It is a junction number, because it is equal to n+sod(n) for n = 71213456989 and 71213457007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150602 + ... + 406334.

It is an arithmetic number, because the mean of its divisors is an integer number (5316709860).

Almost surely, 2^71213457044 is an apocalyptic number.

It is an amenable number.

71213457044 is a deficient number, since it is larger than the sum of its proper divisors (56387579596).

71213457044 is a wasteful number, since it uses less digits than its factorization.

71213457044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257399 (or 257397 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 71213457044 in words is "seventy-one billion, two hundred thirteen million, four hundred fifty-seven thousand, forty-four".