1320757371623 has 8 divisors (see below), whose sum is σ = 1358070299040. Its totient is φ = 1283529538080.

The previous prime is 1320757371607. The next prime is 1320757371679. The reversal of 1320757371623 is 3261737570231.

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 1320757371623 - 2⁴ = 1320757371607 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 (1320757371823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21241988 + ... + 21304073.

It is an arithmetic number, because the mean of its divisors is an integer number (169758787380).

Almost surely, 2^{1320757371623} is an apocalyptic number.

1320757371623 is a deficient number, since it is larger than the sum of its proper divisors (37312927417).

1320757371623 is an equidigital number, since it uses as much as digits as its factorization.

1320757371623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42546937.

The product of its (nonzero) digits is 1111320, while the sum is 47.

The spelling of 1320757371623 in words is "one trillion, three hundred twenty billion, seven hundred fifty-seven million, three hundred seventy-one thousand, six hundred twenty-three".