523299296520 has 1152 divisors, whose sum is σ = 2461187514240. Its totient is φ = 94461050880.

The previous prime is 523299296519. The next prime is 523299296551. The reversal of 523299296520 is 25692992325.

523299296520 is a `hidden beast` number, since 5 + 2 + 3 + 2 + 99 + 29 + 6 + 520 = 666.

It is a super-2 number, since 2×523299296520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 42876739 + ... + 42888941.

It is an arithmetic number, because the mean of its divisors is an integer number (2136447495).

Almost surely, 2^523299296520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523299296520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230593757120).

523299296520 is an abundant number, since it is smaller than the sum of its proper divisors (1937888217720).

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

523299296520 is a wasteful number, since it uses less digits than its factorization.

523299296520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275 (or 12261 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 523299296520 in words is "five hundred twenty-three billion, two hundred ninety-nine million, two hundred ninety-six thousand, five hundred twenty".