1057777720211 has 4 divisors (see below), whose sum is σ = 1062166839624. Its totient is φ = 1053388600800.

The previous prime is 1057777720201. The next prime is 1057777720217. The reversal of 1057777720211 is 1120277777501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057777720211 is a prime.

It is a super-2 number, since 2×1057777720211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057777720217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194559345 + ... + 2194559826.

It is an arithmetic number, because the mean of its divisors is an integer number (265541709906).

Almost surely, 2^{1057777720211} is an apocalyptic number.

1057777720211 is a deficient number, since it is larger than the sum of its proper divisors (4389119413).

1057777720211 is an equidigital number, since it uses as much as digits as its factorization.

1057777720211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389119412.

The product of its (nonzero) digits is 336140, while the sum is 47.

The spelling of 1057777720211 in words is "one trillion, fifty-seven billion, seven hundred seventy-seven million, seven hundred twenty thousand, two hundred eleven".