523118409690 has 64 divisors (see below), whose sum is σ = 1265562144000. Its totient is φ = 138380918784.

The previous prime is 523118409677. The next prime is 523118409691. The reversal of 523118409690 is 96904811325.

It is a super-2 number, since 2×523118409690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523118409691) 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 31 ways as a sum of consecutive naturals, for example, 3361339 + ... + 3513521.

It is an arithmetic number, because the mean of its divisors is an integer number (19774408500).

Almost surely, 2^523118409690 is an apocalyptic number.

523118409690 is an abundant number, since it is smaller than the sum of its proper divisors (742443734310).

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

523118409690 is a wasteful number, since it uses less digits than its factorization.

523118409690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153111.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 523118409690 in words is "five hundred twenty-three billion, one hundred eighteen million, four hundred nine thousand, six hundred ninety".