423420213151451 has 4 divisors (see below), whose sum is σ = 424430762586600. Its totient is φ = 422409663716304.

The previous prime is 423420213151427. The next prime is 423420213151469. The reversal of 423420213151451 is 154151312024324.

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 423420213151451 - 2⁶ = 423420213151387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423420213151651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505274716946 + ... + 505274717783.

It is an arithmetic number, because the mean of its divisors is an integer number (106107690646650).

Almost surely, 2^{423420213151451} is an apocalyptic number.

423420213151451 is a deficient number, since it is larger than the sum of its proper divisors (1010549435149).

423420213151451 is a wasteful number, since it uses less digits than its factorization.

423420213151451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010549435148.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 423420213151451 its reverse (154151312024324), we get a palindrome (577571525175775).

The spelling of 423420213151451 in words is "four hundred twenty-three trillion, four hundred twenty billion, two hundred thirteen million, one hundred fifty-one thousand, four hundred fifty-one".