7778345082 has 8 divisors (see below), whose sum is σ = 15556690176. Its totient is φ = 2592781692.

The previous prime is 7778345051. The next prime is 7778345093. The reversal of 7778345082 is 2805438777.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

7778345082 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648195418 + ... + 648195429.

It is an arithmetic number, because the mean of its divisors is an integer number (1944586272).

Almost surely, 2^7778345082 is an apocalyptic number.

7778345082 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7778345082 is a wasteful number, since it uses less digits than its factorization.

7778345082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296390852.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The square root of 7778345082 is about 88194.9266227939. The cubic root of 7778345082 is about 1981.3554880169.

The spelling of 7778345082 in words is "seven billion, seven hundred seventy-eight million, three hundred forty-five thousand, eighty-two".