66077275442025 has 24 divisors (see below), whose sum is σ = 109364355309664. Its totient is φ = 35203602844800.

The previous prime is 66077275441973. The next prime is 66077275442039. The reversal of 66077275442025 is 52024457277066.

It is a happy number.

It is not a de Polignac number, because 66077275442025 - 2³⁷ = 65939836488553 is a prime.

It is a super-2 number, since 2×66077275442025² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470063311 + ... + 470203860.

Almost surely, 2^{66077275442025} is an apocalyptic number.

It is an amenable number.

66077275442025 is a deficient number, since it is larger than the sum of its proper divisors (43287079867639).

66077275442025 is a wasteful number, since it uses less digits than its factorization.

66077275442025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940268121 (or 940268116 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 57.

The spelling of 66077275442025 in words is "sixty-six trillion, seventy-seven billion, two hundred seventy-five million, four hundred forty-two thousand, twenty-five".