7776087775378 has 8 divisors (see below), whose sum is σ = 12561372560268. Its totient is φ = 3588963588624.

The previous prime is 7776087775367. The next prime is 7776087775493. The reversal of 7776087775378 is 8735777806777.

It can be written as a sum of positive squares in 2 ways, for example, as 6593838215409 + 1182249559969 = 2567847^2 + 1087313^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7776087775298 and 7776087775307.

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, 149540149501 + ... + 149540149552.

Almost surely, 2^{7776087775378} is an apocalyptic number.

7776087775378 is a deficient number, since it is larger than the sum of its proper divisors (4785284784890).

7776087775378 is a wasteful number, since it uses less digits than its factorization.

7776087775378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299080299068.

The product of its (nonzero) digits is 4743607680, while the sum is 79.

The spelling of 7776087775378 in words is "seven trillion, seven hundred seventy-six billion, eighty-seven million, seven hundred seventy-five thousand, three hundred seventy-eight".