20078161600609 has 8 divisors (see below), whose sum is σ = 23737728000960. Its totient is φ = 16616409600336.

The previous prime is 20078161600597. The next prime is 20078161600639. The reversal of 20078161600609 is 90600616187002.

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

It is not a de Polignac number, because 20078161600609 - 2⁴³ = 11282068578401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20078161600639) 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, 49453599799 + ... + 49453600204.

It is an arithmetic number, because the mean of its divisors is an integer number (2967216000120).

Almost surely, 2^{20078161600609} is an apocalyptic number.

20078161600609 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20078161600609 is a deficient number, since it is larger than the sum of its proper divisors (3659566400351).

20078161600609 is an equidigital number, since it uses as much as digits as its factorization.

20078161600609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98907200039.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 20078161600609 in words is "twenty trillion, seventy-eight billion, one hundred sixty-one million, six hundred thousand, six hundred nine".