71390563212 has 24 divisors (see below), whose sum is σ = 166584549376. Its totient is φ = 23795916048.

The previous prime is 71390563201. The next prime is 71390563217. The reversal of 71390563212 is 21236509317.

It is a happy number.

It is a super-2 number, since 2×71390563212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71390563217) 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, 244293 + ... + 449955.

Almost surely, 2^71390563212 is an apocalyptic number.

It is an amenable number.

71390563212 is an abundant number, since it is smaller than the sum of its proper divisors (95193986164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71390563212 is a wasteful number, since it uses less digits than its factorization.

71390563212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234597 (or 234595 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 71390563212 in words is "seventy-one billion, three hundred ninety million, five hundred sixty-three thousand, two hundred twelve".