77761236448 has 48 divisors (see below), whose sum is σ = 177831055584. Its totient is φ = 32779906560.

The previous prime is 77761236437. The next prime is 77761236491. The reversal of 77761236448 is 84463216777.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2831815 + ... + 2859142.

It is an arithmetic number, because the mean of its divisors is an integer number (3704813658).

Almost surely, 2^77761236448 is an apocalyptic number.

It is an amenable number.

77761236448 is an abundant number, since it is smaller than the sum of its proper divisors (100069819136).

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

77761236448 is a wasteful number, since it uses less digits than its factorization.

77761236448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691035 (or 5691027 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 55.

The spelling of 77761236448 in words is "seventy-seven billion, seven hundred sixty-one million, two hundred thirty-six thousand, four hundred forty-eight".