11866485390 has 16 divisors (see below), whose sum is σ = 28479565008. Its totient is φ = 3164396096.

The previous prime is 11866485347. The next prime is 11866485391. The reversal of 11866485390 is 9358466811.

It is a super-2 number, since 2×11866485390² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11866485391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197774727 + ... + 197774786.

It is an arithmetic number, because the mean of its divisors is an integer number (1779972813).

Almost surely, 2^11866485390 is an apocalyptic number.

11866485390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11866485390 is an abundant number, since it is smaller than the sum of its proper divisors (16613079618).

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

11866485390 is a wasteful number, since it uses less digits than its factorization.

11866485390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395549523.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 11866485390 in words is "eleven billion, eight hundred sixty-six million, four hundred eighty-five thousand, three hundred ninety".