1055969550191 has 4 divisors (see below), whose sum is σ = 1064030386584. Its totient is φ = 1047908713800.

The previous prime is 1055969550143. The next prime is 1055969550197. The reversal of 1055969550191 is 1910559695501.

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

It is a cyclic number.

It is not a de Polignac number, because 1055969550191 - 2¹⁸ = 1055969288047 is a prime.

It is a super-2 number, since 2×1055969550191² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055969550197) 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, 4030418000 + ... + 4030418261.

It is an arithmetic number, because the mean of its divisors is an integer number (266007596646).

Almost surely, 2^{1055969550191} is an apocalyptic number.

1055969550191 is a deficient number, since it is larger than the sum of its proper divisors (8060836393).

1055969550191 is an equidigital number, since it uses as much as digits as its factorization.

1055969550191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060836392.

The product of its (nonzero) digits is 2733750, while the sum is 56.

The spelling of 1055969550191 in words is "one trillion, fifty-five billion, nine hundred sixty-nine million, five hundred fifty thousand, one hundred ninety-one".