20404221577427 has 8 divisors (see below), whose sum is σ = 20423905309440. Its totient is φ = 20384546598720.

The previous prime is 20404221577391. The next prime is 20404221577459. The reversal of 20404221577427 is 72477512240402.

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 20404221577427 - 2³⁸ = 20129343670483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404221574427) 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, 2480783 + ... + 6852935.

It is an arithmetic number, because the mean of its divisors is an integer number (2552988163680).

Almost surely, 2^{20404221577427} is an apocalyptic number.

20404221577427 is a deficient number, since it is larger than the sum of its proper divisors (19683732013).

20404221577427 is a wasteful number, since it uses less digits than its factorization.

20404221577427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376653.

The product of its (nonzero) digits is 1756160, while the sum is 47.

The spelling of 20404221577427 in words is "twenty trillion, four hundred four billion, two hundred twenty-one million, five hundred seventy-seven thousand, four hundred twenty-seven".