1055766763821 has 16 divisors (see below), whose sum is σ = 1755040854528. Its totient is φ = 548450266800.

The previous prime is 1055766763771. The next prime is 1055766763867. The reversal of 1055766763821 is 1283676675501.

It is not a de Polignac number, because 1055766763821 - 2¹¹ = 1055766761773 is a prime.

It is a super-2 number, since 2×1055766763821² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055766773821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2285209215 + ... + 2285209676.

It is an arithmetic number, because the mean of its divisors is an integer number (109690053408).

Almost surely, 2^{1055766763821} is an apocalyptic number.

1055766763821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1055766763821 is a deficient number, since it is larger than the sum of its proper divisors (699274090707).

1055766763821 is a wasteful number, since it uses less digits than its factorization.

1055766763821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570418912.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 1055766763821 in words is "one trillion, fifty-five billion, seven hundred sixty-six million, seven hundred sixty-three thousand, eight hundred twenty-one".