77013400448 has 32 divisors (see below), whose sum is σ = 156025575000. Its totient is φ = 37854040576.

The previous prime is 77013400447. The next prime is 77013400481. The reversal of 77013400448 is 84400431077.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77013400447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5091323 + ... + 5106426.

Almost surely, 2^77013400448 is an apocalyptic number.

It is an amenable number.

77013400448 is an abundant number, since it is smaller than the sum of its proper divisors (79012174552).

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

77013400448 is a wasteful number, since it uses less digits than its factorization.

77013400448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10197822 (or 10197810 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 77013400448 in words is "seventy-seven billion, thirteen million, four hundred thousand, four hundred forty-eight".