34778385390 has 32 divisors (see below), whose sum is σ = 95392143360. Its totient is φ = 7949345184.

The previous prime is 34778385377. The next prime is 34778385407. The reversal of 34778385390 is 9358387743.

It is a self number, because there is not a number n which added to its sum of digits gives 34778385390.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 82805470 + ... + 82805889.

It is an arithmetic number, because the mean of its divisors is an integer number (2981004480).

Almost surely, 2^34778385390 is an apocalyptic number.

34778385390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

34778385390 is an abundant number, since it is smaller than the sum of its proper divisors (60613757970).

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

34778385390 is a wasteful number, since it uses less digits than its factorization.

34778385390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165611376.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 34778385390 in words is "thirty-four billion, seven hundred seventy-eight million, three hundred eighty-five thousand, three hundred ninety".