20472405277 has 8 divisors (see below), whose sum is σ = 20971170432. Its totient is φ = 19976272800.

The previous prime is 20472405169. The next prime is 20472405299. The reversal of 20472405277 is 77250427402.

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 20472405277 - 2¹¹ = 20472403229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472409277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642424 + ... + 673537.

It is an arithmetic number, because the mean of its divisors is an integer number (2621396304).

Almost surely, 2^20472405277 is an apocalyptic number.

It is an amenable number.

20472405277 is a deficient number, since it is larger than the sum of its proper divisors (498765155).

20472405277 is a wasteful number, since it uses less digits than its factorization.

20472405277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316339.

The product of its (nonzero) digits is 219520, while the sum is 40.

The spelling of 20472405277 in words is "twenty billion, four hundred seventy-two million, four hundred five thousand, two hundred seventy-seven".