71536666106 has 4 divisors (see below), whose sum is σ = 107304999162. Its totient is φ = 35768333052.

The previous prime is 71536666099. The next prime is 71536666127. The reversal of 71536666106 is 60166663517.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58382640625 + 13154025481 = 241625^2 + 114691^2 .

It is a super-2 number, since 2×71536666106² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17884166525 + ... + 17884166528.

Almost surely, 2^71536666106 is an apocalyptic number.

71536666106 is a deficient number, since it is larger than the sum of its proper divisors (35768333056).

71536666106 is a wasteful number, since it uses less digits than its factorization.

71536666106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35768333055.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 71536666106 in words is "seventy-one billion, five hundred thirty-six million, six hundred sixty-six thousand, one hundred six".