11655540113212 has 12 divisors (see below), whose sum is σ = 20401057608736. Its totient is φ = 5826666510720.

The previous prime is 11655540113209. The next prime is 11655540113227. The reversal of 11655540113212 is 21231104555611.

It is a congruent number.

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, 275862708 + ... + 275904955.

Almost surely, 2^{11655540113212} is an apocalyptic number.

It is an amenable number.

11655540113212 is a deficient number, since it is larger than the sum of its proper divisors (8745517495524).

11655540113212 is a wasteful number, since it uses less digits than its factorization.

11655540113212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551772948 (or 551772946 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

Adding to 11655540113212 its reverse (21231104555611), we get a palindrome (32886644668823).

The spelling of 11655540113212 in words is "eleven trillion, six hundred fifty-five billion, five hundred forty million, one hundred thirteen thousand, two hundred twelve".