16501420003 has 2 divisors, whose sum is σ = 16501420004. Its totient is φ = 16501420002.

The previous prime is 16501419973. The next prime is 16501420027. The reversal of 16501420003 is 30002410561.

It is a strong prime.

It is an emirp because it is prime and its reverse (30002410561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16501420003 - 2¹⁷ = 16501288931 is a prime.

It is a super-5 number, since 5×16501420003⁵ (a number of 52 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (16501424003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250710001 + 8250710002.

It is an arithmetic number, because the mean of its divisors is an integer number (8250710002).

Almost surely, 2^16501420003 is an apocalyptic number.

16501420003 is a deficient number, since it is larger than the sum of its proper divisors (1).

16501420003 is an equidigital number, since it uses as much as digits as its factorization.

16501420003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 16501420003 its reverse (30002410561), we get a palindrome (46503830564).

The spelling of 16501420003 in words is "sixteen billion, five hundred one million, four hundred twenty thousand, three".