10431551023505 has 4 divisors (see below), whose sum is σ = 12517861228212. Its totient is φ = 8345240818800.

The previous prime is 10431551023459. The next prime is 10431551023549. The reversal of 10431551023505 is 50532015513401.

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 4527822225424 + 5903728798081 = 2127868^2 + 2429759^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10431551023505 is a prime.

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, 1043155102346 + ... + 1043155102355.

It is an arithmetic number, because the mean of its divisors is an integer number (3129465307053).

Almost surely, 2^{10431551023505} is an apocalyptic number.

It is an amenable number.

10431551023505 is a deficient number, since it is larger than the sum of its proper divisors (2086310204707).

10431551023505 is an equidigital number, since it uses as much as digits as its factorization.

10431551023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086310204706.

The product of its (nonzero) digits is 45000, while the sum is 35.

Adding to 10431551023505 its reverse (50532015513401), we get a palindrome (60963566536906).

The spelling of 10431551023505 in words is "ten trillion, four hundred thirty-one billion, five hundred fifty-one million, twenty-three thousand, five hundred five".