1245533226397 has 4 divisors (see below), whose sum is σ = 1299686844960. Its totient is φ = 1191379607836.

The previous prime is 1245533226373. The next prime is 1245533226433. The reversal of 1245533226397 is 7936223355421.

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 1245533226397 - 2³¹ = 1243385742749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245533226347) 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, 27076809247 + ... + 27076809292.

It is an arithmetic number, because the mean of its divisors is an integer number (324921711240).

Almost surely, 2^{1245533226397} is an apocalyptic number.

It is an amenable number.

1245533226397 is a deficient number, since it is larger than the sum of its proper divisors (54153618563).

1245533226397 is an equidigital number, since it uses as much as digits as its factorization.

1245533226397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54153618562.

The product of its digits is 8164800, while the sum is 52.

The spelling of 1245533226397 in words is "one trillion, two hundred forty-five billion, five hundred thirty-three million, two hundred twenty-six thousand, three hundred ninety-seven".