7776378045 has 24 divisors (see below), whose sum is σ = 14188480800. Its totient is φ = 3929116896.

The previous prime is 7776378031. The next prime is 7776378061. The reversal of 7776378045 is 5408736777.

It is not a de Polignac number, because 7776378045 - 2¹⁴ = 7776361661 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7776377982 and 7776378000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4546735 + ... + 4548444.

It is an arithmetic number, because the mean of its divisors is an integer number (591186700).

Almost surely, 2^7776378045 is an apocalyptic number.

It is an amenable number.

7776378045 is a deficient number, since it is larger than the sum of its proper divisors (6412102755).

7776378045 is a wasteful number, since it uses less digits than its factorization.

7776378045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095209 (or 9095206 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 54.

The square root of 7776378045 is about 88183.7742728219. The cubic root of 7776378045 is about 1981.1884547086.

The spelling of 7776378045 in words is "seven billion, seven hundred seventy-six million, three hundred seventy-eight thousand, forty-five".