77187286276 has 27 divisors (see below), whose sum is σ = 137727022783. Its totient is φ = 37851014240.

The previous prime is 77187286261. The next prime is 77187286277. The reversal of 77187286276 is 67268278177.

The square root of 77187286276 is 277826.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 23259300100 + 53927986176 = 152510^2 + 232224^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77187286277) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29448246 + ... + 29450866.

Almost surely, 2^77187286276 is an apocalyptic number.

77187286276 is the 277826-th square number.

It is an amenable number.

77187286276 is a deficient number, since it is larger than the sum of its proper divisors (60539736507).

77187286276 is an frugal number, since it uses more digits than its factorization.

77187286276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352 (or 2676 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 61.

The spelling of 77187286276 in words is "seventy-seven billion, one hundred eighty-seven million, two hundred eighty-six thousand, two hundred seventy-six".