20864429104011 has 4 divisors (see below), whose sum is σ = 27819238805352. Its totient is φ = 13909619402672.

The previous prime is 20864429104007. The next prime is 20864429104021. The reversal of 20864429104011 is 11040192446802.

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

It is a cyclic number.

It is not a de Polignac number, because 20864429104011 - 2² = 20864429104007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20864429104021) 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, 3477404850666 + ... + 3477404850671.

It is an arithmetic number, because the mean of its divisors is an integer number (6954809701338).

Almost surely, 2^{20864429104011} is an apocalyptic number.

20864429104011 is a deficient number, since it is larger than the sum of its proper divisors (6954809701341).

20864429104011 is an equidigital number, since it uses as much as digits as its factorization.

20864429104011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6954809701340.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 20864429104011 in words is "twenty trillion, eight hundred sixty-four billion, four hundred twenty-nine million, one hundred four thousand, eleven".