77800220538404 has 48 divisors (see below), whose sum is σ = 167589364121088. Its totient is φ = 30774498507648.

The previous prime is 77800220538401. The next prime is 77800220538413. The reversal of 77800220538404 is 40483502200877.

It is not an unprimeable number, because it can be changed into a prime (77800220538401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9429119 + ... + 15636774.

It is an arithmetic number, because the mean of its divisors is an integer number (3491445085856).

Almost surely, 2^{77800220538404} is an apocalyptic number.

It is an amenable number.

77800220538404 is an abundant number, since it is smaller than the sum of its proper divisors (89789143582684).

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

77800220538404 is a wasteful number, since it uses less digits than its factorization.

77800220538404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25074444 (or 25074442 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 77800220538404 in words is "seventy-seven trillion, eight hundred billion, two hundred twenty million, five hundred thirty-eight thousand, four hundred four".