20670954542761 has 8 divisors (see below), whose sum is σ = 21112662265344. Its totient is φ = 20229325994400.

The previous prime is 20670954542747. The next prime is 20670954542783. The reversal of 20670954542761 is 16724545907602.

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 20670954542761 - 2⁷ = 20670954542633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20670954542696 and 20670954542705.

It is not an unprimeable number, because it can be changed into a prime (20670954543761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19265665 + ... + 20310286.

It is an arithmetic number, because the mean of its divisors is an integer number (2639082783168).

Almost surely, 2^{20670954542761} is an apocalyptic number.

It is an amenable number.

20670954542761 is a deficient number, since it is larger than the sum of its proper divisors (441707722583).

20670954542761 is a wasteful number, since it uses less digits than its factorization.

20670954542761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39587111.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 20670954542761 in words is "twenty trillion, six hundred seventy billion, nine hundred fifty-four million, five hundred forty-two thousand, seven hundred sixty-one".