1811053936656 has 100 divisors (see below), whose sum is σ = 5242081810812. Its totient is φ = 603642461184.

The previous prime is 1811053936651. The next prime is 1811053936669. The reversal of 1811053936656 is 6566393501181.

1811053936656 is a `hidden beast` number, since 1 + 8 + 1 + 10 + 539 + 36 + 65 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1762829776656 + 48224160000 = 1327716^2 + 219600^2 .

It is a super-2 number, since 2×1811053936656² (a number of 25 digits) contains 22 as substring.

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 (1811053936651) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22532316 + ... + 22612548.

Almost surely, 2^{1811053936656} is an apocalyptic number.

1811053936656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1811053936656 is an abundant number, since it is smaller than the sum of its proper divisors (3431027874156).

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

1811053936656 is a wasteful number, since it uses less digits than its factorization.

1811053936656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97670 (or 97655 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 1811053936656 in words is "one trillion, eight hundred eleven billion, fifty-three million, nine hundred thirty-six thousand, six hundred fifty-six".