523201543770640 has 80 divisors (see below), whose sum is σ = 1390226186115072. Its totient is φ = 179382748856832.

The previous prime is 523201543770599. The next prime is 523201543770643. The reversal of 523201543770640 is 46077345102325.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (523201543770643) 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 15 ways as a sum of consecutive naturals, for example, 172294737 + ... + 175305103.

Almost surely, 2^{523201543770640} is an apocalyptic number.

It is an amenable number.

523201543770640 is an abundant number, since it is smaller than the sum of its proper divisors (867024642344432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523201543770640 is a wasteful number, since it uses less digits than its factorization.

523201543770640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320744 (or 3320738 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 49.

Adding to 523201543770640 its reverse (46077345102325), we get a palindrome (569278888872965).

The spelling of 523201543770640 in words is "five hundred twenty-three trillion, two hundred one billion, five hundred forty-three million, seven hundred seventy thousand, six hundred forty".