523028453278 has 4 divisors (see below), whose sum is σ = 784542679920. Its totient is φ = 261514226638.

The previous prime is 523028453273. The next prime is 523028453317. The reversal of 523028453278 is 872354820325.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523028453273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130757113318 + ... + 130757113321.

It is an arithmetic number, because the mean of its divisors is an integer number (196135669980).

Almost surely, 2^523028453278 is an apocalyptic number.

523028453278 is a deficient number, since it is larger than the sum of its proper divisors (261514226642).

523028453278 is a wasteful number, since it uses less digits than its factorization.

523028453278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261514226641.

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 523028453278 in words is "five hundred twenty-three billion, twenty-eight million, four hundred fifty-three thousand, two hundred seventy-eight".