77248628741 has 8 divisors (see below), whose sum is σ = 78727236120. Its totient is φ = 75770802432.

The previous prime is 77248628731. The next prime is 77248628747. The reversal of 77248628741 is 14782684277.

It can be written as a sum of positive squares in 4 ways, for example, as 42234360100 + 35014268641 = 205510^2 + 187121^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 77248628741 - 2¹⁰ = 77248627717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77248628747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6401 + ... + 393113.

It is an arithmetic number, because the mean of its divisors is an integer number (9840904515).

Almost surely, 2^77248628741 is an apocalyptic number.

It is an amenable number.

77248628741 is a deficient number, since it is larger than the sum of its proper divisors (1478607379).

77248628741 is a wasteful number, since it uses less digits than its factorization.

77248628741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390535.

The product of its digits is 8429568, while the sum is 56.

The spelling of 77248628741 in words is "seventy-seven billion, two hundred forty-eight million, six hundred twenty-eight thousand, seven hundred forty-one".