20670954542759 has 4 divisors (see below), whose sum is σ = 21569691696816. Its totient is φ = 19772217388704.

The previous prime is 20670954542747. The next prime is 20670954542783. The reversal of 20670954542759 is 95724545907602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20670954542759 - 2⁴ = 20670954542743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20670954542695 and 20670954542704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670954542059) 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, 449368576994 + ... + 449368577039.

It is an arithmetic number, because the mean of its divisors is an integer number (5392422924204).

Almost surely, 2^{20670954542759} is an apocalyptic number.

20670954542759 is a deficient number, since it is larger than the sum of its proper divisors (898737154057).

20670954542759 is an equidigital number, since it uses as much as digits as its factorization.

20670954542759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898737154056.

The product of its (nonzero) digits is 190512000, while the sum is 65.

The spelling of 20670954542759 in words is "twenty trillion, six hundred seventy billion, nine hundred fifty-four million, five hundred forty-two thousand, seven hundred fifty-nine".