66414088485687 has 4 divisors (see below), whose sum is σ = 88552117980920. Its totient is φ = 44276058990456.

The previous prime is 66414088485673. The next prime is 66414088485691. The reversal of 66414088485687 is 78658488041466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66414088485687 - 2¹⁹ = 66414087961399 is a prime.

It is a super-2 number, since 2×66414088485687² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414088485587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11069014747612 + ... + 11069014747617.

It is an arithmetic number, because the mean of its divisors is an integer number (22138029495230).

Almost surely, 2^{66414088485687} is an apocalyptic number.

66414088485687 is a deficient number, since it is larger than the sum of its proper divisors (22138029495233).

66414088485687 is a wasteful number, since it uses less digits than its factorization.

66414088485687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22138029495232.

The product of its (nonzero) digits is 1981808640, while the sum is 75.

The spelling of 66414088485687 in words is "sixty-six trillion, four hundred fourteen billion, eighty-eight million, four hundred eighty-five thousand, six hundred eighty-seven".