523069121620 has 24 divisors (see below), whose sum is σ = 1163059577064. Its totient is φ = 196920139776.

The previous prime is 523069121507. The next prime is 523069121621. The reversal of 523069121620 is 26121960325.

It can be written as a sum of positive squares in 4 ways, for example, as 48648478096 + 474420643524 = 220564^2 + 688782^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 523069121620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523069121621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 769218957 + ... + 769219636.

It is an arithmetic number, because the mean of its divisors is an integer number (48460815711).

Almost surely, 2^523069121620 is an apocalyptic number.

It is an amenable number.

523069121620 is an abundant number, since it is smaller than the sum of its proper divisors (639990455444).

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

523069121620 is a wasteful number, since it uses less digits than its factorization.

523069121620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538438619 (or 1538438617 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 523069121620 in words is "five hundred twenty-three billion, sixty-nine million, one hundred twenty-one thousand, six hundred twenty".