71278218000 has 960 divisors, whose sum is σ = 287281612800. Its totient is φ = 16936128000.

The previous prime is 71278217977. The next prime is 71278218019. The reversal of 71278218000 is 81287217.

It is a happy number.

It is a super-2 number, since 2×71278218000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 358181901 + ... + 358182099.

It is an arithmetic number, because the mean of its divisors is an integer number (299251680).

Almost surely, 2^71278218000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71278218000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143640806400).

71278218000 is an abundant number, since it is smaller than the sum of its proper divisors (216003394800).

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

71278218000 is a wasteful number, since it uses less digits than its factorization.

71278218000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The spelling of 71278218000 in words is "seventy-one billion, two hundred seventy-eight million, two hundred eighteen thousand".