16620255003 has 32 divisors (see below), whose sum is σ = 25642448640. Its totient is φ = 9463516160.

The previous prime is 16620254999. The next prime is 16620255011. The reversal of 16620255003 is 30055202661.

It is a cyclic number.

It is not a de Polignac number, because 16620255003 - 2² = 16620254999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16620255013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293176 + ... + 345242.

It is an arithmetic number, because the mean of its divisors is an integer number (801326520).

Almost surely, 2^16620255003 is an apocalyptic number.

16620255003 is a deficient number, since it is larger than the sum of its proper divisors (9022193637).

16620255003 is a wasteful number, since it uses less digits than its factorization.

16620255003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52667.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 16620255003 its reverse (30055202661), we get a palindrome (46675457664).

The spelling of 16620255003 in words is "sixteen billion, six hundred twenty million, two hundred fifty-five thousand, three".