11711217105550 has 24 divisors (see below), whose sum is σ = 21782965740696. Its totient is φ = 4684464923040.

The previous prime is 11711217105451. The next prime is 11711217105571. The reversal of 11711217105550 is 5550171211711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14145652 + ... + 14950648.

It is an arithmetic number, because the mean of its divisors is an integer number (907623572529).

Almost surely, 2^{11711217105550} is an apocalyptic number.

11711217105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11711217105550 is a deficient number, since it is larger than the sum of its proper divisors (10071748635146).

11711217105550 is a wasteful number, since it uses less digits than its factorization.

11711217105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095972 (or 1095967 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 37.

The spelling of 11711217105550 in words is "eleven trillion, seven hundred eleven billion, two hundred seventeen million, one hundred five thousand, five hundred fifty".