16503951679489 has 8 divisors (see below), whose sum is σ = 16528443936480. Its totient is φ = 16479460383936.

The previous prime is 16503951679463. The next prime is 16503951679559. The reversal of 16503951679489 is 98497615930561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16503951679489 - 2²⁹ = 16503414808577 is a prime.

It is a super-2 number, since 2×16503951679489² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16503951079489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38814489 + ... + 39237385.

It is an arithmetic number, because the mean of its divisors is an integer number (2066055492060).

Almost surely, 2^{16503951679489} is an apocalyptic number.

It is an amenable number.

16503951679489 is a deficient number, since it is larger than the sum of its proper divisors (24492256991).

16503951679489 is an equidigital number, since it uses as much as digits as its factorization.

16503951679489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480719.

The product of its (nonzero) digits is 440899200, while the sum is 73.

The spelling of 16503951679489 in words is "sixteen trillion, five hundred three billion, nine hundred fifty-one million, six hundred seventy-nine thousand, four hundred eighty-nine".