1671637604485 has 8 divisors (see below), whose sum is σ = 2006340034176. Its totient is φ = 1337060144400.

The previous prime is 1671637604477. The next prime is 1671637604501. The reversal of 1671637604485 is 5844067361761.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1671637604485 - 2³ = 1671637604477 is a prime.

It is a super-3 number, since 3×1671637604485³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31212969 + ... + 31266478.

It is an arithmetic number, because the mean of its divisors is an integer number (250792504272).

Almost surely, 2^{1671637604485} is an apocalyptic number.

It is an amenable number.

1671637604485 is a deficient number, since it is larger than the sum of its proper divisors (334702429691).

1671637604485 is an equidigital number, since it uses as much as digits as its factorization.

1671637604485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62484803.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 1671637604485 in words is "one trillion, six hundred seventy-one billion, six hundred thirty-seven million, six hundred four thousand, four hundred eighty-five".