56784474669 has 32 divisors (see below), whose sum is σ = 85103149824. Its totient is φ = 33416570880.

The previous prime is 56784474631. The next prime is 56784474727. The reversal of 56784474669 is 96647448765.

56784474669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56784474669 - 2²⁴ = 56767697453 is a prime.

It is a super-2 number, since 2×56784474669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56784474269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6953949 + ... + 6962109.

It is an arithmetic number, because the mean of its divisors is an integer number (2659473432).

Almost surely, 2^56784474669 is an apocalyptic number.

It is an amenable number.

56784474669 is a deficient number, since it is larger than the sum of its proper divisors (28318675155).

56784474669 is a wasteful number, since it uses less digits than its factorization.

56784474669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15957.

The product of its digits is 243855360, while the sum is 66.

The spelling of 56784474669 in words is "fifty-six billion, seven hundred eighty-four million, four hundred seventy-four thousand, six hundred sixty-nine".