71147868450 has 48 divisors (see below), whose sum is σ = 178095788640. Its totient is φ = 18795445120.

The previous prime is 71147868347. The next prime is 71147868457. The reversal of 71147868450 is 5486874117.

It is a junction number, because it is equal to n+sod(n) for n = 71147868393 and 71147868402.

It is not an unprimeable number, because it can be changed into a prime (71147868457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2200395 + ... + 2232494.

It is an arithmetic number, because the mean of its divisors is an integer number (3710328930).

Almost surely, 2^71147868450 is an apocalyptic number.

71147868450 is an abundant number, since it is smaller than the sum of its proper divisors (106947920190).

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

71147868450 is a wasteful number, since it uses less digits than its factorization.

71147868450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433011 (or 4433006 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 71147868450 in words is "seventy-one billion, one hundred forty-seven million, eight hundred sixty-eight thousand, four hundred fifty".