66210078070325 has 96 divisors (see below), whose sum is σ = 99901577318400. Its totient is φ = 42493227494400.

The previous prime is 66210078070321. The next prime is 66210078070373. The reversal of 66210078070325 is 52307087001266.

It is not a de Polignac number, because 66210078070325 - 2² = 66210078070321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66210078070325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66210078070321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 446690576 + ... + 446838774.

It is an arithmetic number, because the mean of its divisors is an integer number (1040641430400).

Almost surely, 2^{66210078070325} is an apocalyptic number.

It is an amenable number.

66210078070325 is a deficient number, since it is larger than the sum of its proper divisors (33691499248075).

66210078070325 is a wasteful number, since it uses less digits than its factorization.

66210078070325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149067 (or 149062 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 66210078070325 in words is "sixty-six trillion, two hundred ten billion, seventy-eight million, seventy thousand, three hundred twenty-five".