66086897479225 has 12 divisors (see below), whose sum is σ = 93654574713664. Its totient is φ = 45316729699920.

The previous prime is 66086897479201. The next prime is 66086897479277. The reversal of 66086897479225 is 52297479868066.

It is not a de Polignac number, because 66086897479225 - 2³⁹ = 65537141665337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188819706909 + ... + 188819707258.

Almost surely, 2^{66086897479225} is an apocalyptic number.

It is an amenable number.

66086897479225 is a deficient number, since it is larger than the sum of its proper divisors (27567677234439).

66086897479225 is a wasteful number, since it uses less digits than its factorization.

66086897479225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377639414184 (or 377639414179 counting only the distinct ones).

The product of its (nonzero) digits is 4389396480, while the sum is 79.

The spelling of 66086897479225 in words is "sixty-six trillion, eighty-six billion, eight hundred ninety-seven million, four hundred seventy-nine thousand, two hundred twenty-five".