1055511665155 has 16 divisors (see below), whose sum is σ = 1297543572864. Its totient is φ = 823790776320.

The previous prime is 1055511665129. The next prime is 1055511665207. The reversal of 1055511665155 is 5515661155501.

It is a happy number.

1055511665155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1055511665155 - 2¹⁹ = 1055511140867 is a prime.

It is a super-2 number, since 2×1055511665155² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12671974 + ... + 12754996.

It is an arithmetic number, because the mean of its divisors is an integer number (81096473304).

Almost surely, 2^{1055511665155} is an apocalyptic number.

1055511665155 is a deficient number, since it is larger than the sum of its proper divisors (242031907709).

1055511665155 is an equidigital number, since it uses as much as digits as its factorization.

1055511665155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145086.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 1055511665155 in words is "one trillion, fifty-five billion, five hundred eleven million, six hundred sixty-five thousand, one hundred fifty-five".