1816622888061 has 16 divisors (see below), whose sum is σ = 2436094251008. Its totient is φ = 1204135081200.

The previous prime is 1816622888029. The next prime is 1816622888089. The reversal of 1816622888061 is 1608882266181.

It is not a de Polignac number, because 1816622888061 - 2⁵ = 1816622888029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1816622887992 and 1816622888010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816622887061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1898185 + ... + 2690046.

It is an arithmetic number, because the mean of its divisors is an integer number (152255890688).

Almost surely, 2^{1816622888061} is an apocalyptic number.

It is an amenable number.

1816622888061 is a deficient number, since it is larger than the sum of its proper divisors (619471362947).

1816622888061 is a wasteful number, since it uses less digits than its factorization.

1816622888061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588992.

The product of its (nonzero) digits is 3538944, while the sum is 57.

The spelling of 1816622888061 in words is "one trillion, eight hundred sixteen billion, six hundred twenty-two million, eight hundred eighty-eight thousand, sixty-one".