1523480265217 has 4 divisors (see below), whose sum is σ = 1523767232340. Its totient is φ = 1523193298096.

The previous prime is 1523480265199. The next prime is 1523480265239. The reversal of 1523480265217 is 7125620843251.

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 424692035856 + 1098788229361 = 651684^2 + 1048231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523480265217 - 2⁷ = 1523480265089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523480265287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143475598 + ... + 143486215.

It is an arithmetic number, because the mean of its divisors is an integer number (380941808085).

Almost surely, 2^{1523480265217} is an apocalyptic number.

It is an amenable number.

1523480265217 is a deficient number, since it is larger than the sum of its proper divisors (286967123).

1523480265217 is an equidigital number, since it uses as much as digits as its factorization.

1523480265217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286967122.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 1523480265217 in words is "one trillion, five hundred twenty-three billion, four hundred eighty million, two hundred sixty-five thousand, two hundred seventeen".