523402234400421 has 12 divisors (see below), whose sum is σ = 756044883798048. Its totient is φ = 348925853345064.

The previous prime is 523402234400407. The next prime is 523402234400431. The reversal of 523402234400421 is 124004432204325.

523402234400421 is a `hidden beast` number, since 5 + 2 + 3 + 4 + 0 + 223 + 4 + 4 + 0 + 0 + 421 = 666.

It is not a de Polignac number, because 523402234400421 - 2⁹ = 523402234399909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523402234400431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747096135 + ... + 747796388.

It is an arithmetic number, because the mean of its divisors is an integer number (63003740316504).

Almost surely, 2^{523402234400421} is an apocalyptic number.

It is an amenable number.

523402234400421 is a deficient number, since it is larger than the sum of its proper divisors (232642649397627).

523402234400421 is a wasteful number, since it uses less digits than its factorization.

523402234400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494931432 (or 1494931429 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 523402234400421 its reverse (124004432204325), we get a palindrome (647406666604746).

The spelling of 523402234400421 in words is "five hundred twenty-three trillion, four hundred two billion, two hundred thirty-four million, four hundred thousand, four hundred twenty-one".