11666777888950 has 12 divisors (see below), whose sum is σ = 21700206873540. Its totient is φ = 4666711155560.

The previous prime is 11666777888929. The next prime is 11666777888957. The reversal of 11666777888950 is 5988877766611.

It is a super-2 number, since 2×11666777888950² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666777888957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116667778840 + ... + 116667778939.

It is an arithmetic number, because the mean of its divisors is an integer number (1808350572795).

Almost surely, 2^{11666777888950} is an apocalyptic number.

11666777888950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11666777888950 is a deficient number, since it is larger than the sum of its proper divisors (10033428984590).

11666777888950 is a wasteful number, since it uses less digits than its factorization.

11666777888950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233335557791 (or 233335557786 counting only the distinct ones).

The product of its (nonzero) digits is 1706987520, while the sum is 79.

The spelling of 11666777888950 in words is "eleven trillion, six hundred sixty-six billion, seven hundred seventy-seven million, eight hundred eighty-eight thousand, nine hundred fifty".