71866562097 has 16 divisors (see below), whose sum is σ = 105058483200. Its totient is φ = 43336616400.

The previous prime is 71866562087. The next prime is 71866562101. The reversal of 71866562097 is 79026566817.

It is not a de Polignac number, because 71866562097 - 2¹⁶ = 71866496561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71866562087) 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, 5465229 + ... + 5478362.

It is an arithmetic number, because the mean of its divisors is an integer number (6566155200).

Almost surely, 2^71866562097 is an apocalyptic number.

It is an amenable number.

71866562097 is a deficient number, since it is larger than the sum of its proper divisors (33191921103).

71866562097 is a wasteful number, since it uses less digits than its factorization.

71866562097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943804.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 71866562097 in words is "seventy-one billion, eight hundred sixty-six million, five hundred sixty-two thousand, ninety-seven".