1245113023501 has 4 divisors (see below), whose sum is σ = 1245723674400. Its totient is φ = 1244502372604.

The previous prime is 1245113023493. The next prime is 1245113023547. The reversal of 1245113023501 is 1053203115421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1245113023501 - 2³ = 1245113023493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1245113023501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245113023591) 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, 305322391 + ... + 305326468.

It is an arithmetic number, because the mean of its divisors is an integer number (311430918600).

Almost surely, 2^{1245113023501} is an apocalyptic number.

It is an amenable number.

1245113023501 is a deficient number, since it is larger than the sum of its proper divisors (610650899).

1245113023501 is an equidigital number, since it uses as much as digits as its factorization.

1245113023501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610650898.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1245113023501 its reverse (1053203115421), we get a palindrome (2298316138922).

The spelling of 1245113023501 in words is "one trillion, two hundred forty-five billion, one hundred thirteen million, twenty-three thousand, five hundred one".