16368666220 has 48 divisors (see below), whose sum is σ = 36067082688. Its totient is φ = 6228161280.

The previous prime is 16368666203. The next prime is 16368666287. The reversal of 16368666220 is 2266686361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15039 + ... + 181558.

It is an arithmetic number, because the mean of its divisors is an integer number (751397556).

Almost surely, 2^16368666220 is an apocalyptic number.

16368666220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16368666220 is an abundant number, since it is smaller than the sum of its proper divisors (19698416468).

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

16368666220 is a wasteful number, since it uses less digits than its factorization.

16368666220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196810 (or 196808 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 16368666220 in words is "sixteen billion, three hundred sixty-eight million, six hundred sixty-six thousand, two hundred twenty".