1673606881026 has 80 divisors (see below), whose sum is σ = 3796664892768. Its totient is φ = 550985198400.

The previous prime is 1673606881003. The next prime is 1673606881027. The reversal of 1673606881026 is 6201886063761.

1673606881026 is a `hidden beast` number, since 1 + 6 + 7 + 3 + 606 + 8 + 8 + 1 + 0 + 26 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1673606881027) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4290966 + ... + 4664718.

Almost surely, 2^{1673606881026} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673606881026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898332446384).

1673606881026 is an abundant number, since it is smaller than the sum of its proper divisors (2123058011742).

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

1673606881026 is a wasteful number, since it uses less digits than its factorization.

1673606881026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374109 (or 374100 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 1673606881026 in words is "one trillion, six hundred seventy-three billion, six hundred six million, eight hundred eighty-one thousand, twenty-six".