20477701171 has 8 divisors (see below), whose sum is σ = 21040740144. Its totient is φ = 19915166880.

The previous prime is 20477701151. The next prime is 20477701201. The reversal of 20477701171 is 17110777402.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20477701171 - 2³¹ = 18330217523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20477701171.

It is not an unprimeable number, because it can be changed into a prime (20477701141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43165 + ... + 206926.

It is an arithmetic number, because the mean of its divisors is an integer number (2630092518).

Almost surely, 2^20477701171 is an apocalyptic number.

20477701171 is a deficient number, since it is larger than the sum of its proper divisors (563038973).

20477701171 is a wasteful number, since it uses less digits than its factorization.

20477701171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252341.

The product of its (nonzero) digits is 19208, while the sum is 37.

The spelling of 20477701171 in words is "twenty billion, four hundred seventy-seven million, seven hundred one thousand, one hundred seventy-one".