1245353774399 has 24 divisors (see below), whose sum is σ = 1479789425088. Its totient is φ = 1044529926720.

The previous prime is 1245353774393. The next prime is 1245353774411. The reversal of 1245353774399 is 9934773535421.

It is not a de Polignac number, because 1245353774399 - 2¹² = 1245353770303 is a prime.

It is a super-2 number, since 2×1245353774399² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245353774393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12342197 + ... + 12442689.

It is an arithmetic number, because the mean of its divisors is an integer number (61657892712).

Almost surely, 2^{1245353774399} is an apocalyptic number.

1245353774399 is a deficient number, since it is larger than the sum of its proper divisors (234435650689).

1245353774399 is a wasteful number, since it uses less digits than its factorization.

1245353774399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105935 (or 105928 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 62.

The spelling of 1245353774399 in words is "one trillion, two hundred forty-five billion, three hundred fifty-three million, seven hundred seventy-four thousand, three hundred ninety-nine".