11621831574212 has 12 divisors (see below), whose sum is σ = 20338233995436. Its totient is φ = 5810907575520.

The previous prime is 11621831574203. The next prime is 11621831574251. The reversal of 11621831574212 is 21247513812611.

It can be written as a sum of positive squares in 2 ways, for example, as 3308666412676 + 8313165161536 = 1818974^2 + 2883256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036762 + ... + 5233742.

It is an arithmetic number, because the mean of its divisors is an integer number (1694852832953).

Almost surely, 2^{11621831574212} is an apocalyptic number.

It is an amenable number.

11621831574212 is a deficient number, since it is larger than the sum of its proper divisors (8716402421224).

11621831574212 is a wasteful number, since it uses less digits than its factorization.

11621831574212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105798 (or 4105796 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The spelling of 11621831574212 in words is "eleven trillion, six hundred twenty-one billion, eight hundred thirty-one million, five hundred seventy-four thousand, two hundred twelve".