1055106059991 has 4 divisors (see below), whose sum is σ = 1406808079992. Its totient is φ = 703404039992.

The previous prime is 1055106059989. The next prime is 1055106060007. The reversal of 1055106059991 is 1999506015501.

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 1055106059991 - 2¹ = 1055106059989 is a prime.

It is a super-2 number, since 2×1055106059991² (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 (1055106059911) 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, 175851009996 + ... + 175851010001.

It is an arithmetic number, because the mean of its divisors is an integer number (351702019998).

Almost surely, 2^{1055106059991} is an apocalyptic number.

1055106059991 is a deficient number, since it is larger than the sum of its proper divisors (351702020001).

1055106059991 is an equidigital number, since it uses as much as digits as its factorization.

1055106059991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351702020000.

The product of its (nonzero) digits is 546750, while the sum is 51.

The spelling of 1055106059991 in words is "one trillion, fifty-five billion, one hundred six million, fifty-nine thousand, nine hundred ninety-one".