1245643361633 has 8 divisors (see below), whose sum is σ = 1364977318656. Its totient is φ = 1127325013200.

The previous prime is 1245643361617. The next prime is 1245643361639. The reversal of 1245643361633 is 3361633465421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245643361633 - 2⁴ = 1245643361617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1245643361639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253899578 + ... + 253904483.

It is an arithmetic number, because the mean of its divisors is an integer number (170622164832).

Almost surely, 2^{1245643361633} is an apocalyptic number.

It is an amenable number.

1245643361633 is a deficient number, since it is larger than the sum of its proper divisors (119333957023).

1245643361633 is a wasteful number, since it uses less digits than its factorization.

1245643361633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507804295.

The product of its digits is 2799360, while the sum is 47.

The spelling of 1245643361633 in words is "one trillion, two hundred forty-five billion, six hundred forty-three million, three hundred sixty-one thousand, six hundred thirty-three".