1273201730643 has 8 divisors (see below), whose sum is σ = 1697946459088. Its totient is φ = 848629077984.

The previous prime is 1273201730641. The next prime is 1273201730677. The reversal of 1273201730643 is 3460371023721.

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

It is not a de Polignac number, because 1273201730643 - 2¹ = 1273201730641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273201730641) 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, 43001680 + ... + 43031277.

It is an arithmetic number, because the mean of its divisors is an integer number (212243307386).

Almost surely, 2^{1273201730643} is an apocalyptic number.

1273201730643 is a deficient number, since it is larger than the sum of its proper divisors (424744728445).

1273201730643 is an equidigital number, since it uses as much as digits as its factorization.

1273201730643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86037893.

The product of its (nonzero) digits is 127008, while the sum is 39.

The spelling of 1273201730643 in words is "one trillion, two hundred seventy-three billion, two hundred one million, seven hundred thirty thousand, six hundred forty-three".