1245015743399 has 4 divisors (see below), whose sum is σ = 1268506606536. Its totient is φ = 1221524880264.

The previous prime is 1245015743299. The next prime is 1245015743407. The reversal of 1245015743399 is 9933475105421.

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 1245015743399 - 2¹⁶ = 1245015677863 is a prime.

It is a super-2 number, since 2×1245015743399² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 23490863083 = 1245015743399 / (1 + 2 + 4 + 5 + 0 + 1 + 5 + 7 + 4 + 3 + 3 + 9 + 9).

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 1245015743399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245015743299) 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, 11745431489 + ... + 11745431594.

It is an arithmetic number, because the mean of its divisors is an integer number (317126651634).

Almost surely, 2^{1245015743399} is an apocalyptic number.

1245015743399 is a deficient number, since it is larger than the sum of its proper divisors (23490863137).

1245015743399 is an equidigital number, since it uses as much as digits as its factorization.

1245015743399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23490863136.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 1245015743399 in words is "one trillion, two hundred forty-five billion, fifteen million, seven hundred forty-three thousand, three hundred ninety-nine".