234432210555551 has 4 divisors (see below), whose sum is σ = 234831583998312. Its totient is φ = 234032837112792.

The previous prime is 234432210555541. The next prime is 234432210555617. The reversal of 234432210555551 is 155555012234432.

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 234432210555551 - 2¹⁰ = 234432210554527 is a prime.

It is a super-2 number, since 2×234432210555551² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234432210555496 and 234432210555505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234432210555511) 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, 199686720500 + ... + 199686721673.

It is an arithmetic number, because the mean of its divisors is an integer number (58707895999578).

Almost surely, 2^{234432210555551} is an apocalyptic number.

234432210555551 is a deficient number, since it is larger than the sum of its proper divisors (399373442761).

234432210555551 is an equidigital number, since it uses as much as digits as its factorization.

234432210555551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399373442760.

The product of its (nonzero) digits is 3600000, while the sum is 47.

Adding to 234432210555551 its reverse (155555012234432), we get a palindrome (389987222789983).

The spelling of 234432210555551 in words is "two hundred thirty-four trillion, four hundred thirty-two billion, two hundred ten million, five hundred fifty-five thousand, five hundred fifty-one".