23434510354421 has 2 divisors, whose sum is σ = 23434510354422. Its totient is φ = 23434510354420.

The previous prime is 23434510354417. The next prime is 23434510354433. The reversal of 23434510354421 is 12445301543432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23396859220900 + 37651133521 = 4837030^2 + 194039^2 .

It is a cyclic number.

It is not a de Polignac number, because 23434510354421 - 2² = 23434510354417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23430510354421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11717255177210 + 11717255177211.

It is an arithmetic number, because the mean of its divisors is an integer number (11717255177211).

Almost surely, 2^{23434510354421} is an apocalyptic number.

It is an amenable number.

23434510354421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23434510354421 is an equidigital number, since it uses as much as digits as its factorization.

23434510354421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 23434510354421 its reverse (12445301543432), we get a palindrome (35879811897853).

The spelling of 23434510354421 in words is "twenty-three trillion, four hundred thirty-four billion, five hundred ten million, three hundred fifty-four thousand, four hundred twenty-one".