77066700448 has 24 divisors (see below), whose sum is σ = 151755926112. Its totient is φ = 38525512896.

The previous prime is 77066700439. The next prime is 77066700449. The reversal of 77066700448 is 84400766077.

It is not an unprimeable number, because it can be changed into a prime (77066700449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83490 + ... + 401377.

It is an arithmetic number, because the mean of its divisors is an integer number (6323163588).

Almost surely, 2^77066700448 is an apocalyptic number.

It is an amenable number.

77066700448 is a deficient number, since it is larger than the sum of its proper divisors (74689225664).

77066700448 is a wasteful number, since it uses less digits than its factorization.

77066700448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489844 (or 489836 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 77066700448 in words is "seventy-seven billion, sixty-six million, seven hundred thousand, four hundred forty-eight".