423383551956 has 72 divisors (see below), whose sum is σ = 1081016471808. Its totient is φ = 139704600000.

The previous prime is 423383551951. The next prime is 423383552003. The reversal of 423383551956 is 659155383324.

423383551956 is a `hidden beast` number, since 4 + 2 + 3 + 3 + 83 + 551 + 9 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423383551951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36903301 + ... + 36914771.

It is an arithmetic number, because the mean of its divisors is an integer number (15014117664).

Almost surely, 2^423383551956 is an apocalyptic number.

It is an amenable number.

423383551956 is an abundant number, since it is smaller than the sum of its proper divisors (657632919852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423383551956 is a wasteful number, since it uses less digits than its factorization.

423383551956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21733 (or 21728 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 54.

The spelling of 423383551956 in words is "four hundred twenty-three billion, three hundred eighty-three million, five hundred fifty-one thousand, nine hundred fifty-six".