16081856801 has 2 divisors, whose sum is σ = 16081856802. Its totient is φ = 16081856800.

The previous prime is 16081856743. The next prime is 16081856873. The reversal of 16081856801 is 10865818061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13933441600 + 2148415201 = 118040^2 + 46351^2 .

It is a cyclic number.

It is not a de Polignac number, because 16081856801 - 2¹⁴ = 16081840417 is a prime.

It is a super-2 number, since 2×16081856801² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16081856891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8040928400 + 8040928401.

It is an arithmetic number, because the mean of its divisors is an integer number (8040928401).

Almost surely, 2^16081856801 is an apocalyptic number.

It is an amenable number.

16081856801 is a deficient number, since it is larger than the sum of its proper divisors (1).

16081856801 is an equidigital number, since it uses as much as digits as its factorization.

16081856801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 16081856801 in words is "sixteen billion, eighty-one million, eight hundred fifty-six thousand, eight hundred one".