999999000777 has 48 divisors (see below), whose sum is σ = 1614760000512. Its totient is φ = 548367563520.

The previous prime is 999999000769. The next prime is 999999000779. The reversal of 999999000777 is 777000999999.

It is not a de Polignac number, because 999999000777 - 2³ = 999999000769 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 999999000699 and 999999000708.

It is not an unprimeable number, because it can be changed into a prime (999999000779) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 862249 + ... + 1656342.

It is an arithmetic number, because the mean of its divisors is an integer number (33640833344).

Almost surely, 2^999999000777 is an apocalyptic number.

It is an amenable number.

999999000777 is a deficient number, since it is larger than the sum of its proper divisors (614760999735).

999999000777 is a wasteful number, since it uses less digits than its factorization.

999999000777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518718 (or 2518711 counting only the distinct ones).

The product of its (nonzero) digits is 182284263, while the sum is 75.

The spelling of 999999000777 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred seventy-seven", and thus it is an aban number.