20671466441 has 4 divisors (see below), whose sum is σ = 20713913472. Its totient is φ = 20629019412.

The previous prime is 20671466393. The next prime is 20671466477. The reversal of 20671466441 is 14466417602.

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 20671466441 - 2⁶ = 20671466377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20671466041) 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, 21222785 + ... + 21223758.

It is an arithmetic number, because the mean of its divisors is an integer number (5178478368).

Almost surely, 2^20671466441 is an apocalyptic number.

It is an amenable number.

20671466441 is a deficient number, since it is larger than the sum of its proper divisors (42447031).

20671466441 is an equidigital number, since it uses as much as digits as its factorization.

20671466441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42447030.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 20671466441 in words is "twenty billion, six hundred seventy-one million, four hundred sixty-six thousand, four hundred forty-one".