423552343022551 has 4 divisors (see below), whose sum is σ = 423553814995104. Its totient is φ = 423550871050000.

The previous prime is 423552343022539. The next prime is 423552343022569. The reversal of 423552343022551 is 155220343255324.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423552343022551 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 (423552343022531) 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, 735554575 + ... + 736130176.

It is an arithmetic number, because the mean of its divisors is an integer number (105888453748776).

Almost surely, 2^{423552343022551} is an apocalyptic number.

423552343022551 is a deficient number, since it is larger than the sum of its proper divisors (1471972553).

423552343022551 is a wasteful number, since it uses less digits than its factorization.

423552343022551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471972552.

The product of its (nonzero) digits is 4320000, while the sum is 46.

Adding to 423552343022551 its reverse (155220343255324), we get a palindrome (578772686277875).

The spelling of 423552343022551 in words is "four hundred twenty-three trillion, five hundred fifty-two billion, three hundred forty-three million, twenty-two thousand, five hundred fifty-one".