10523156465 has 4 divisors (see below), whose sum is σ = 12627787764. Its totient is φ = 8418525168.

The previous prime is 10523156459. The next prime is 10523156507. The reversal of 10523156465 is 56465132501.

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 3619706896 + 6903449569 = 60164^2 + 83087^2 .

It is a cyclic number.

It is not a de Polignac number, because 10523156465 - 2¹² = 10523152369 is a prime.

It is a super-2 number, since 2×10523156465² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052315642 + ... + 1052315651.

It is an arithmetic number, because the mean of its divisors is an integer number (3156946941).

Almost surely, 2^10523156465 is an apocalyptic number.

It is an amenable number.

10523156465 is a deficient number, since it is larger than the sum of its proper divisors (2104631299).

10523156465 is an equidigital number, since it uses as much as digits as its factorization.

10523156465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104631298.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 10523156465 its reverse (56465132501), we get a palindrome (66988288966).

The spelling of 10523156465 in words is "ten billion, five hundred twenty-three million, one hundred fifty-six thousand, four hundred sixty-five".