77271768484 has 27 divisors (see below), whose sum is σ = 141383989803. Its totient is φ = 36949947672.

The previous prime is 77271768449. The next prime is 77271768491. The reversal of 77271768484 is 48486717277.

It is a happy number.

The square root of 77271768484 is 277978.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12783967 + ... + 12790009.

Almost surely, 2^77271768484 is an apocalyptic number.

77271768484 is the 277978-th square number.

It is an amenable number.

77271768484 is a deficient number, since it is larger than the sum of its proper divisors (64112221319).

77271768484 is an frugal number, since it uses more digits than its factorization.

77271768484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12136 (or 6068 counting only the distinct ones).

The product of its digits is 29503488, while the sum is 61.

The spelling of 77271768484 in words is "seventy-seven billion, two hundred seventy-one million, seven hundred sixty-eight thousand, four hundred eighty-four".