16220619640 has 16 divisors (see below), whose sum is σ = 36496394280. Its totient is φ = 6488247840.

The previous prime is 16220619593. The next prime is 16220619643. The reversal of 16220619640 is 4691602261.

16220619640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16220619640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220619643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202757706 + ... + 202757785.

Almost surely, 2^16220619640 is an apocalyptic number.

16220619640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16220619640 is an abundant number, since it is smaller than the sum of its proper divisors (20275774640).

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

16220619640 is a wasteful number, since it uses less digits than its factorization.

16220619640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405515502 (or 405515498 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 16220619640 in words is "sixteen billion, two hundred twenty million, six hundred nineteen thousand, six hundred forty".