42323405551 has 4 divisors (see below), whose sum is σ = 48369606352. Its totient is φ = 36277204752.

The previous prime is 42323405539. The next prime is 42323405609. The reversal of 42323405551 is 15550432324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42323405551 - 2¹³ = 42323397359 is a prime.

It is a super-2 number, since 2×42323405551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42323405651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023100390 + ... + 3023100403.

It is an arithmetic number, because the mean of its divisors is an integer number (12092401588).

Almost surely, 2^42323405551 is an apocalyptic number.

42323405551 is a deficient number, since it is larger than the sum of its proper divisors (6046200801).

42323405551 is an equidigital number, since it uses as much as digits as its factorization.

42323405551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046200800.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 42323405551 its reverse (15550432324), we get a palindrome (57873837875).

The spelling of 42323405551 in words is "forty-two billion, three hundred twenty-three million, four hundred five thousand, five hundred fifty-one".