523400897553409 has 24 divisors (see below), whose sum is σ = 576305130648960. Its totient is φ = 474935496896256.

The previous prime is 523400897553397. The next prime is 523400897553451. The reversal of 523400897553409 is 904355798004325.

It is a happy number.

It is not a de Polignac number, because 523400897553409 - 2¹⁹ = 523400897029121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523400897503409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286653574 + ... + 288473695.

It is an arithmetic number, because the mean of its divisors is an integer number (24012713777040).

Almost surely, 2^{523400897553409} is an apocalyptic number.

It is an amenable number.

523400897553409 is a deficient number, since it is larger than the sum of its proper divisors (52904233095551).

523400897553409 is a wasteful number, since it uses less digits than its factorization.

523400897553409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575127417 (or 575127400 counting only the distinct ones).

The product of its (nonzero) digits is 163296000, while the sum is 64.

The spelling of 523400897553409 in words is "five hundred twenty-three trillion, four hundred billion, eight hundred ninety-seven million, five hundred fifty-three thousand, four hundred nine".