16220671652 has 24 divisors (see below), whose sum is σ = 30076323480. Its totient is φ = 7628083200.

The previous prime is 16220671619. The next prime is 16220671679. The reversal of 16220671652 is 25617602261.

It can be written as a sum of positive squares in 4 ways, for example, as 378925156 + 15841746496 = 19466^2 + 125864^2 .

It is a super-2 number, since 2×16220671652² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 21152 + ... + 181352.

It is an arithmetic number, because the mean of its divisors is an integer number (1253180145).

Almost surely, 2^16220671652 is an apocalyptic number.

It is an amenable number.

16220671652 is a deficient number, since it is larger than the sum of its proper divisors (13855651828).

16220671652 is a wasteful number, since it uses less digits than its factorization.

16220671652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161711 (or 161709 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 16220671652 in words is "sixteen billion, two hundred twenty million, six hundred seventy-one thousand, six hundred fifty-two".