71944245066 has 32 divisors (see below), whose sum is σ = 151488106560. Its totient is φ = 22715254656.

The previous prime is 71944245053. The next prime is 71944245067. The reversal of 71944245066 is 66054244917.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71944245067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635950 + ... + 740486.

It is an arithmetic number, because the mean of its divisors is an integer number (4734003330).

Almost surely, 2^71944245066 is an apocalyptic number.

71944245066 is an abundant number, since it is smaller than the sum of its proper divisors (79543861494).

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

71944245066 is a wasteful number, since it uses less digits than its factorization.

71944245066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110598.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 71944245066 in words is "seventy-one billion, nine hundred forty-four million, two hundred forty-five thousand, sixty-six".