20014454717661 has 8 divisors (see below), whose sum is σ = 26688538860064. Its totient is φ = 13341670193520.

The previous prime is 20014454717567. The next prime is 20014454717669. The reversal of 20014454717661 is 16671745441002.

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

It is not a de Polignac number, because 20014454717661 - 2²¹ = 20014452620509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20014454717661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20014454717669) 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, 324868630 + ... + 324930231.

It is an arithmetic number, because the mean of its divisors is an integer number (3336067357508).

Almost surely, 2^{20014454717661} is an apocalyptic number.

It is an amenable number.

20014454717661 is a deficient number, since it is larger than the sum of its proper divisors (6674084142403).

20014454717661 is a wasteful number, since it uses less digits than its factorization.

20014454717661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649809131.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 20014454717661 in words is "twenty trillion, fourteen billion, four hundred fifty-four million, seven hundred seventeen thousand, six hundred sixty-one".