1321677045757 has 8 divisors (see below), whose sum is σ = 1343396784896. Its totient is φ = 1300015930752.

The previous prime is 1321677045721. The next prime is 1321677045779. The reversal of 1321677045757 is 7575407761231.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321677045757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321677045698 and 1321677045707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321677049757) 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, 14610573 + ... + 14700754.

It is an arithmetic number, because the mean of its divisors is an integer number (167924598112).

Almost surely, 2^{1321677045757} is an apocalyptic number.

It is an amenable number.

1321677045757 is a deficient number, since it is larger than the sum of its proper divisors (21719739139).

1321677045757 is an equidigital number, since it uses as much as digits as its factorization.

1321677045757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29312067.

The product of its (nonzero) digits is 8643600, while the sum is 55.

The spelling of 1321677045757 in words is "one trillion, three hundred twenty-one billion, six hundred seventy-seven million, forty-five thousand, seven hundred fifty-seven".