66420460460425 has 12 divisors (see below), whose sum is σ = 85942300144320. Its totient is φ = 50826091482320.

The previous prime is 66420460460411. The next prime is 66420460460503. The reversal of 66420460460425 is 52406406402466.

It is not a de Polignac number, because 66420460460425 - 2⁷ = 66420460460297 is a prime.

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, 57756921565 + ... + 57756922714.

It is an arithmetic number, because the mean of its divisors is an integer number (7161858345360).

Almost surely, 2^{66420460460425} is an apocalyptic number.

It is an amenable number.

66420460460425 is a deficient number, since it is larger than the sum of its proper divisors (19521839683895).

66420460460425 is a wasteful number, since it uses less digits than its factorization.

66420460460425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115513844312 (or 115513844307 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 49.

The spelling of 66420460460425 in words is "sixty-six trillion, four hundred twenty billion, four hundred sixty million, four hundred sixty thousand, four hundred twenty-five".