11666723390 has 32 divisors (see below), whose sum is σ = 24042230784. Its totient is φ = 3993000480.

The previous prime is 11666723363. The next prime is 11666723401. The reversal of 11666723390 is 9332766611.

It is a happy number.

11666723390 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11666723390² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105974 + ... + 185913.

It is an arithmetic number, because the mean of its divisors is an integer number (751319712).

Almost surely, 2^11666723390 is an apocalyptic number.

11666723390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11666723390 is an abundant number, since it is smaller than the sum of its proper divisors (12375507394).

11666723390 is a wasteful number, since it uses less digits than its factorization.

11666723390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292472.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 11666723390 in words is "eleven billion, six hundred sixty-six million, seven hundred twenty-three thousand, three hundred ninety".