1345242021643 has 16 divisors (see below), whose sum is σ = 1470486187296. Its totient is φ = 1223110563840.

The previous prime is 1345242021583. The next prime is 1345242021647. The reversal of 1345242021643 is 3461202425431.

It is a cyclic number.

It is not a de Polignac number, because 1345242021643 - 2²⁹ = 1344705150731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345242021647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9739755 + ... + 9876907.

It is an arithmetic number, because the mean of its divisors is an integer number (91905386706).

Almost surely, 2^{1345242021643} is an apocalyptic number.

1345242021643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1345242021643 is a deficient number, since it is larger than the sum of its proper divisors (125244165653).

1345242021643 is a wasteful number, since it uses less digits than its factorization.

1345242021643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148494.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 1345242021643 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, twenty-one thousand, six hundred forty-three".