71402117418 has 24 divisors (see below), whose sum is σ = 163804858308. Its totient is φ = 22400664192.

The previous prime is 71402117417. The next prime is 71402117431. The reversal of 71402117418 is 81471120417.

71402117418 is a `hidden beast` number, since 71 + 402 + 1 + 174 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70332631209 + 1069486209 = 265203^2 + 32703^2 .

It is not an unprimeable number, because it can be changed into a prime (71402117411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116669821 + ... + 116670432.

Almost surely, 2^71402117418 is an apocalyptic number.

71402117418 is an abundant number, since it is smaller than the sum of its proper divisors (92402740890).

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

71402117418 is a wasteful number, since it uses less digits than its factorization.

71402117418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233340278 (or 233340275 counting only the distinct ones).

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

The spelling of 71402117418 in words is "seventy-one billion, four hundred two million, one hundred seventeen thousand, four hundred eighteen".