16211991730 has 32 divisors (see below), whose sum is σ = 31908411648. Its totient is φ = 5881574400.

The previous prime is 16211991727. The next prime is 16211991749. The reversal of 16211991730 is 3719911261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123567 + ... + 218386.

It is an arithmetic number, because the mean of its divisors is an integer number (997137864).

Almost surely, 2^16211991730 is an apocalyptic number.

16211991730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16211991730 is a deficient number, since it is larger than the sum of its proper divisors (15696419918).

16211991730 is a wasteful number, since it uses less digits than its factorization.

16211991730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342402.

The product of its (nonzero) digits is 20412, while the sum is 40.

The spelling of 16211991730 in words is "sixteen billion, two hundred eleven million, nine hundred ninety-one thousand, seven hundred thirty".