1057722176765 has 4 divisors (see below), whose sum is σ = 1269266612124. Its totient is φ = 846177741408.

The previous prime is 1057722176669. The next prime is 1057722176773. The reversal of 1057722176765 is 5676712277501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 386997212281 + 670724964484 = 622091^2 + 818978^2 .

It is a cyclic number.

It is not a de Polignac number, because 1057722176765 - 2¹² = 1057722172669 is a prime.

It is a super-2 number, since 2×1057722176765² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057722176765.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105772217672 + ... + 105772217681.

It is an arithmetic number, because the mean of its divisors is an integer number (317316653031).

Almost surely, 2^{1057722176765} is an apocalyptic number.

It is an amenable number.

1057722176765 is a deficient number, since it is larger than the sum of its proper divisors (211544435359).

1057722176765 is an equidigital number, since it uses as much as digits as its factorization.

1057722176765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211544435358.

The product of its (nonzero) digits is 8643600, while the sum is 56.

The spelling of 1057722176765 in words is "one trillion, fifty-seven billion, seven hundred twenty-two million, one hundred seventy-six thousand, seven hundred sixty-five".