1245350401523 has 4 divisors (see below), whose sum is σ = 1245376173408. Its totient is φ = 1245324629640.

The previous prime is 1245350401489. The next prime is 1245350401531. The reversal of 1245350401523 is 3251040535421.

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

It is a cyclic number.

It is not a de Polignac number, because 1245350401523 - 2⁶ = 1245350401459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245350401553) 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, 12813323 + ... + 12910148.

It is an arithmetic number, because the mean of its divisors is an integer number (311344043352).

Almost surely, 2^{1245350401523} is an apocalyptic number.

1245350401523 is a deficient number, since it is larger than the sum of its proper divisors (25771885).

1245350401523 is an equidigital number, since it uses as much as digits as its factorization.

1245350401523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25771884.

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 1245350401523 its reverse (3251040535421), we get a palindrome (4496390936944).

The spelling of 1245350401523 in words is "one trillion, two hundred forty-five billion, three hundred fifty million, four hundred one thousand, five hundred twenty-three".