16619966470801 has 4 divisors (see below), whose sum is σ = 17156094421504. Its totient is φ = 16083838520100.

The previous prime is 16619966470799. The next prime is 16619966470831. The reversal of 16619966470801 is 10807466991661.

16619966470801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16619966470801 - 2¹ = 16619966470799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16619966470831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268063975305 + ... + 268063975366.

It is an arithmetic number, because the mean of its divisors is an integer number (4289023605376).

Almost surely, 2^{16619966470801} is an apocalyptic number.

It is an amenable number.

16619966470801 is a deficient number, since it is larger than the sum of its proper divisors (536127950703).

16619966470801 is an equidigital number, since it uses as much as digits as its factorization.

16619966470801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536127950702.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 16619966470801 in words is "sixteen trillion, six hundred nineteen billion, nine hundred sixty-six million, four hundred seventy thousand, eight hundred one".