20412647277 has 16 divisors (see below), whose sum is σ = 29693841408. Its totient is φ = 12370168880.

The previous prime is 20412647273. The next prime is 20412647287. The reversal of 20412647277 is 77274621402.

It is a cyclic number.

It is not a de Polignac number, because 20412647277 - 2² = 20412647273 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412647273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466918 + ... + 508760.

It is an arithmetic number, because the mean of its divisors is an integer number (1855865088).

Almost surely, 2^20412647277 is an apocalyptic number.

It is an amenable number.

20412647277 is a deficient number, since it is larger than the sum of its proper divisors (9281194131).

20412647277 is a wasteful number, since it uses less digits than its factorization.

20412647277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56640.

The product of its (nonzero) digits is 263424, while the sum is 42.

The spelling of 20412647277 in words is "twenty billion, four hundred twelve million, six hundred forty-seven thousand, two hundred seventy-seven".