1055561051049 has 16 divisors (see below), whose sum is σ = 1472417291520. Its totient is φ = 671936455040.

The previous prime is 1055561051011. The next prime is 1055561051071. The reversal of 1055561051049 is 9401501655501.

It is a happy number.

It is not a de Polignac number, because 1055561051049 - 2²⁸ = 1055292615593 is a prime.

It is a super-2 number, since 2×1055561051049² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055561051049.

It is not an unprimeable number, because it can be changed into a prime (1055561051009) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 91289934 + ... + 91301495.

It is an arithmetic number, because the mean of its divisors is an integer number (92026080720).

Almost surely, 2^{1055561051049} is an apocalyptic number.

It is an amenable number.

1055561051049 is a deficient number, since it is larger than the sum of its proper divisors (416856240471).

1055561051049 is a wasteful number, since it uses less digits than its factorization.

1055561051049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182591520.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 1055561051049 in words is "one trillion, fifty-five billion, five hundred sixty-one million, fifty-one thousand, forty-nine".