11663862121120 has 72 divisors (see below), whose sum is σ = 30288688287732. Its totient is φ = 4241404400640.

The previous prime is 11663862121001. The next prime is 11663862121169. The reversal of 11663862121120 is 2112126836611.

It can be written as a sum of positive squares in 2 ways, for example, as 10356836985616 + 1307025135504 = 3218204^2 + 1143252^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 301216749 + ... + 301255468.

Almost surely, 2^{11663862121120} is an apocalyptic number.

11663862121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11663862121120 is an abundant number, since it is smaller than the sum of its proper divisors (18624826166612).

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

11663862121120 is a wasteful number, since it uses less digits than its factorization.

11663862121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602472254 (or 602472235 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

Adding to 11663862121120 its reverse (2112126836611), we get a palindrome (13775988957731).

The spelling of 11663862121120 in words is "eleven trillion, six hundred sixty-three billion, eight hundred sixty-two million, one hundred twenty-one thousand, one hundred twenty".