66425288252466 has 48 divisors (see below), whose sum is σ = 156933763342560. Its totient is φ = 18580500207360.

The previous prime is 66425288252377. The next prime is 66425288252473.

66425288252466 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 66425288252397 and 66425288252406.

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, 2977633111 + ... + 2977655418.

It is an arithmetic number, because the mean of its divisors is an integer number (3269453402970).

Almost surely, 2^{66425288252466} is an apocalyptic number.

66425288252466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66425288252466 is an abundant number, since it is smaller than the sum of its proper divisors (90508475090094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66425288252466 is a wasteful number, since it uses less digits than its factorization.

66425288252466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955288571 (or 5955288558 counting only the distinct ones).

The product of its digits is 530841600, while the sum is 66.

The spelling of 66425288252466 in words is "sixty-six trillion, four hundred twenty-five billion, two hundred eighty-eight million, two hundred fifty-two thousand, four hundred sixty-six".