1670889805420 has 48 divisors (see below), whose sum is σ = 3865756267296. Its totient is φ = 601580480000.

The previous prime is 1670889805397. The next prime is 1670889805469. The reversal of 1670889805420 is 245089880761.

It is a happy number.

It is a super-2 number, since 2×1670889805420² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37576561 + ... + 37621000.

It is an arithmetic number, because the mean of its divisors is an integer number (80536588902).

Almost surely, 2^{1670889805420} is an apocalyptic number.

1670889805420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670889805420 is an abundant number, since it is smaller than the sum of its proper divisors (2194866461876).

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

1670889805420 is a wasteful number, since it uses less digits than its factorization.

1670889805420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75197682 (or 75197680 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 1670889805420 in words is "one trillion, six hundred seventy billion, eight hundred eighty-nine million, eight hundred five thousand, four hundred twenty".