1016776655 has 4 divisors (see below), whose sum is σ = 1220131992. Its totient is φ = 813421320.

The previous prime is 1016776637. The next prime is 1016776693. The reversal of 1016776655 is 5566776101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5566776101 = 15727 ⋅353963.

It is not a de Polignac number, because 1016776655 - 2²⁸ = 748341199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101677661 + ... + 101677670.

It is an arithmetic number, because the mean of its divisors is an integer number (305032998).

Almost surely, 2^1016776655 is an apocalyptic number.

1016776655 is a deficient number, since it is larger than the sum of its proper divisors (203355337).

1016776655 is an equidigital number, since it uses as much as digits as its factorization.

1016776655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203355336.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 1016776655 is about 31886.9354908872. The cubic root of 1016776655 is about 1005.5612336819.

The spelling of 1016776655 in words is "one billion, sixteen million, seven hundred seventy-six thousand, six hundred fifty-five".