523167720005 has 24 divisors (see below), whose sum is σ = 773258225688. Its totient is φ = 337641013248.

The previous prime is 523167720001. The next prime is 523167720029. The reversal of 523167720005 is 500027761325.

It can be written as a sum of positive squares in 4 ways, for example, as 181028124676 + 342139595329 = 425474^2 + 584927^2 .

It is not a de Polignac number, because 523167720005 - 2² = 523167720001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523167720001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62801084 + ... + 62809413.

It is an arithmetic number, because the mean of its divisors is an integer number (32219092737).

Almost surely, 2^523167720005 is an apocalyptic number.

It is an amenable number.

523167720005 is a deficient number, since it is larger than the sum of its proper divisors (250090505683).

523167720005 is a wasteful number, since it uses less digits than its factorization.

523167720005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125610533 (or 125610526 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 523167720005 in words is "five hundred twenty-three billion, one hundred sixty-seven million, seven hundred twenty thousand, five".