20585594442466 has 4 divisors (see below), whose sum is σ = 30878391663702. Its totient is φ = 10292797221232.

The previous prime is 20585594442451. The next prime is 20585594442473. The reversal of 20585594442466 is 66424449558502.

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

It can be written as a sum of positive squares in only one way, i.e., 20539703805625 + 45890636841 = 4532075^2 + 214221^2 .

It is a super-2 number, since 2×20585594442466² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20585594442398 and 20585594442407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5146398610615 + ... + 5146398610618.

Almost surely, 2^{20585594442466} is an apocalyptic number.

20585594442466 is a deficient number, since it is larger than the sum of its proper divisors (10292797221236).

20585594442466 is a wasteful number, since it uses less digits than its factorization.

20585594442466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292797221235.

The product of its (nonzero) digits is 331776000, while the sum is 64.

The spelling of 20585594442466 in words is "twenty trillion, five hundred eighty-five billion, five hundred ninety-four million, four hundred forty-two thousand, four hundred sixty-six".