1866668367020 has 24 divisors (see below), whose sum is σ = 3958815491568. Its totient is φ = 739274600000.

The previous prime is 1866668367017. The next prime is 1866668367043. The reversal of 1866668367020 is 207638666681.

It is a super-2 number, since 2×1866668367020² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462044606 + ... + 462048645.

It is an arithmetic number, because the mean of its divisors is an integer number (164950645482).

Almost surely, 2^{1866668367020} is an apocalyptic number.

1866668367020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1866668367020 is an abundant number, since it is smaller than the sum of its proper divisors (2092147124548).

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

1866668367020 is a wasteful number, since it uses less digits than its factorization.

1866668367020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924093361 (or 924093359 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 1866668367020 in words is "one trillion, eight hundred sixty-six billion, six hundred sixty-eight million, three hundred sixty-seven thousand, twenty".