77241749776 has 15 divisors (see below), whose sum is σ = 149658044133. Its totient is φ = 38620319040.

The previous prime is 77241749713. The next prime is 77241749813. The reversal of 77241749776 is 67794714277.

The square root of 77241749776 is 277924.

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

It can be written as a sum of positive squares in only one way, i.e., 33443631376 + 43798118400 = 182876^2 + 209280^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1076956 + ... + 1146436.

Almost surely, 2^77241749776 is an apocalyptic number.

77241749776 is the 277924-th square number.

It is an amenable number.

77241749776 is a deficient number, since it is larger than the sum of its proper divisors (72416294357).

77241749776 is an frugal number, since it uses more digits than its factorization.

77241749776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138970 (or 69483 counting only the distinct ones).

The product of its digits is 29042496, while the sum is 61.

The spelling of 77241749776 in words is "seventy-seven billion, two hundred forty-one million, seven hundred forty-nine thousand, seven hundred seventy-six".