70776776768 has 28 divisors (see below), whose sum is σ = 143873224572. Its totient is φ = 34525255680.

The previous prime is 70776776767. The next prime is 70776776773. The reversal of 70776776768 is 86767767707.

It can be written as a sum of positive squares in 2 ways, for example, as 22714106944 + 48062669824 = 150712^2 + 219232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70776776698 and 70776776707.

It is not an unprimeable number, because it can be changed into a prime (70776776767) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13483805 + ... + 13489052.

It is an arithmetic number, because the mean of its divisors is an integer number (5138329449).

Almost surely, 2^70776776768 is an apocalyptic number.

It is an amenable number.

70776776768 is an abundant number, since it is smaller than the sum of its proper divisors (73096447804).

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

70776776768 is a wasteful number, since it uses less digits than its factorization.

70776776768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26972910 (or 26972900 counting only the distinct ones).

The product of its (nonzero) digits is 203297472, while the sum is 68.

The spelling of 70776776768 in words is "seventy billion, seven hundred seventy-six million, seven hundred seventy-six thousand, seven hundred sixty-eight".