1808658080256 has 80 divisors (see below), whose sum is σ = 4819953672864. Its totient is φ = 602688897024.

The previous prime is 1808658080239. The next prime is 1808658080263. The reversal of 1808658080256 is 6520808568081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1808658080196 and 1808658080205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4544520 + ... + 4926456.

Almost surely, 2^{1808658080256} is an apocalyptic number.

1808658080256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808658080256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2409976836432).

1808658080256 is an abundant number, since it is smaller than the sum of its proper divisors (3011295592608).

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

1808658080256 is an equidigital number, since it uses as much as digits as its factorization.

1808658080256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385041 (or 385025 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 57.

The spelling of 1808658080256 in words is "one trillion, eight hundred eight billion, six hundred fifty-eight million, eighty thousand, two hundred fifty-six".