20777641321006 has 8 divisors (see below), whose sum is σ = 32171831722944. Its totient is φ = 10053697413360.

The previous prime is 20777641320971. The next prime is 20777641321027. The reversal of 20777641321006 is 60012314677702.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167561623495 + ... + 167561623618.

It is an arithmetic number, because the mean of its divisors is an integer number (4021478965368).

Almost surely, 2^{20777641321006} is an apocalyptic number.

20777641321006 is a deficient number, since it is larger than the sum of its proper divisors (11394190401938).

20777641321006 is a wasteful number, since it uses less digits than its factorization.

20777641321006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335123247146.

The product of its (nonzero) digits is 592704, while the sum is 46.

Adding to 20777641321006 its reverse (60012314677702), we get a palindrome (80789955998708).

The spelling of 20777641321006 in words is "twenty trillion, seven hundred seventy-seven billion, six hundred forty-one million, three hundred twenty-one thousand, six".