10523815801 has 4 divisors (see below), whose sum is σ = 10524025204. Its totient is φ = 10523606400.

The previous prime is 10523815751. The next prime is 10523815843. The reversal of 10523815801 is 10851832501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2445401401 + 8078414400 = 49451^2 + 89880^2 .

It is a 3-Lehmer number, since φ(10523815801) divides (10523815801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 10523815801 - 2¹⁵ = 10523783033 is a prime.

It is a super-2 number, since 2×10523815801² (a number of 21 digits) contains 22 as substring.

It is a deceptive number, since it divides R_10523815800.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10523815871) 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 3 ways as a sum of consecutive naturals, for example, 20941 + ... + 146581.

It is an arithmetic number, because the mean of its divisors is an integer number (2631006301).

Almost surely, 2^10523815801 is an apocalyptic number.

10523815801 is the 83761-st pentagonal number.

It is an amenable number.

10523815801 is a deficient number, since it is larger than the sum of its proper divisors (209403).

10523815801 is an equidigital number, since it uses as much as digits as its factorization.

10523815801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209402.

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 10523815801 in words is "ten billion, five hundred twenty-three million, eight hundred fifteen thousand, eight hundred one".