912777420985 has 32 divisors (see below), whose sum is σ = 1146049293312. Its totient is φ = 697099530240.

The previous prime is 912777420953. The next prime is 912777421009. The reversal of 912777420985 is 589024777219.

It is not a de Polignac number, because 912777420985 - 2⁵ = 912777420953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4516869 + ... + 4714621.

It is an arithmetic number, because the mean of its divisors is an integer number (35814040416).

Almost surely, 2^912777420985 is an apocalyptic number.

It is an amenable number.

912777420985 is a deficient number, since it is larger than the sum of its proper divisors (233271872327).

912777420985 is a wasteful number, since it uses less digits than its factorization.

912777420985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198193.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 912777420985 in words is "nine hundred twelve billion, seven hundred seventy-seven million, four hundred twenty thousand, nine hundred eighty-five".