16402444312 has 16 divisors (see below), whose sum is σ = 31815086400. Its totient is φ = 7918421280.

The previous prime is 16402444301. The next prime is 16402444321. The reversal of 16402444312 is 21344420461.

It is a super-2 number, since 2×16402444312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35349864 + ... + 35350327.

It is an arithmetic number, because the mean of its divisors is an integer number (1988442900).

Almost surely, 2^16402444312 is an apocalyptic number.

It is an amenable number.

16402444312 is a deficient number, since it is larger than the sum of its proper divisors (15412642088).

16402444312 is a wasteful number, since it uses less digits than its factorization.

16402444312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70700226 (or 70700222 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 16402444312 its reverse (21344420461), we get a palindrome (37746864773).

The spelling of 16402444312 in words is "sixteen billion, four hundred two million, four hundred forty-four thousand, three hundred twelve".