1916520716955 has 64 divisors (see below), whose sum is σ = 3405079738368. Its totient is φ = 914359104000.

The previous prime is 1916520716911. The next prime is 1916520717011. The reversal of 1916520716955 is 5596170256191.

It is a happy number.

It is not a de Polignac number, because 1916520716955 - 2⁹ = 1916520716443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1916520716895 and 1916520716904.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1281822 + ... + 2340108.

It is an arithmetic number, because the mean of its divisors is an integer number (53204370912).

Almost surely, 2^{1916520716955} is an apocalyptic number.

1916520716955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1916520716955 is a deficient number, since it is larger than the sum of its proper divisors (1488559021413).

1916520716955 is a wasteful number, since it uses less digits than its factorization.

1916520716955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058596.

The product of its (nonzero) digits is 5103000, while the sum is 57.

The spelling of 1916520716955 in words is "one trillion, nine hundred sixteen billion, five hundred twenty million, seven hundred sixteen thousand, nine hundred fifty-five".