20404211142051 has 24 divisors (see below), whose sum is σ = 33189254492160. Its totient is φ = 11967279260400.

The previous prime is 20404211142047. The next prime is 20404211142067. The reversal of 20404211142051 is 15024111240402.

20404211142051 is a `hidden beast` number, since 2 + 0 + 40 + 42 + 111 + 420 + 51 = 666.

It is not a de Polignac number, because 20404211142051 - 2² = 20404211142047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20404211142151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3324241171 + ... + 3324247308.

It is an arithmetic number, because the mean of its divisors is an integer number (1382885603840).

Almost surely, 2^{20404211142051} is an apocalyptic number.

20404211142051 is a deficient number, since it is larger than the sum of its proper divisors (12785043350109).

20404211142051 is a wasteful number, since it uses less digits than its factorization.

20404211142051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648488527 (or 6648488524 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 20404211142051 its reverse (15024111240402), we get a palindrome (35428322382453).

The spelling of 20404211142051 in words is "twenty trillion, four hundred four billion, two hundred eleven million, one hundred forty-two thousand, fifty-one".