71654223606 has 64 divisors (see below), whose sum is σ = 171640588800. Its totient is φ = 19919299680.

The previous prime is 71654223601. The next prime is 71654223629. The reversal of 71654223606 is 60632245617.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71654223601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394360 + ... + 546651.

It is an arithmetic number, because the mean of its divisors is an integer number (2681884200).

Almost surely, 2^71654223606 is an apocalyptic number.

71654223606 is an abundant number, since it is smaller than the sum of its proper divisors (99986365194).

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

71654223606 is a wasteful number, since it uses less digits than its factorization.

71654223606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941074 (or 941060 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 71654223606 in words is "seventy-one billion, six hundred fifty-four million, two hundred twenty-three thousand, six hundred six".