523640422552 has 32 divisors (see below), whose sum is σ = 1058050939680. Its totient is φ = 241520175360.

The previous prime is 523640422511. The next prime is 523640422553. The reversal of 523640422552 is 255224046325.

It is a super-2 number, since 2×523640422552² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523640422553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1508973 + ... + 1823260.

It is an arithmetic number, because the mean of its divisors is an integer number (33064091865).

Almost surely, 2^523640422552 is an apocalyptic number.

523640422552 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

523640422552 is an abundant number, since it is smaller than the sum of its proper divisors (534410517128).

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

523640422552 is a wasteful number, since it uses less digits than its factorization.

523640422552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333763 (or 3333759 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 523640422552 its reverse (255224046325), we get a palindrome (778864468877).

The spelling of 523640422552 in words is "five hundred twenty-three billion, six hundred forty million, four hundred twenty-two thousand, five hundred fifty-two".