10785407778 has 48 divisors (see below), whose sum is σ = 23466283776. Its totient is φ = 3580109280.

The previous prime is 10785407761. The next prime is 10785407783. The reversal of 10785407778 is 87770458701.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7080925 + ... + 7082447.

It is an arithmetic number, because the mean of its divisors is an integer number (488880912).

Almost surely, 2^10785407778 is an apocalyptic number.

10785407778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10785407778 is an abundant number, since it is smaller than the sum of its proper divisors (12680875998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10785407778 is a wasteful number, since it uses less digits than its factorization.

10785407778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919 (or 2916 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 54.

The spelling of 10785407778 in words is "ten billion, seven hundred eighty-five million, four hundred seven thousand, seven hundred seventy-eight".