1813266557996 has 24 divisors (see below), whose sum is σ = 3186654912000. Its totient is φ = 902794111184.

The previous prime is 1813266557987. The next prime is 1813266558001. The reversal of 1813266557996 is 6997556623181.

It is a super-2 number, since 2×1813266557996² (a number of 25 digits) contains 22 as substring.

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, 26522585 + ... + 26590863.

It is an arithmetic number, because the mean of its divisors is an integer number (132777288000).

Almost surely, 2^{1813266557996} is an apocalyptic number.

It is an amenable number.

1813266557996 is a deficient number, since it is larger than the sum of its proper divisors (1373388354004).

1813266557996 is a wasteful number, since it uses less digits than its factorization.

1813266557996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96301 (or 96299 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 68.

The spelling of 1813266557996 in words is "one trillion, eight hundred thirteen billion, two hundred sixty-six million, five hundred fifty-seven thousand, nine hundred ninety-six".