77800847016 has 64 divisors (see below), whose sum is σ = 199757534400. Its totient is φ = 25241600000.

The previous prime is 77800847009. The next prime is 77800847017. The reversal of 77800847016 is 61074800877.

It is a super-2 number, since 2×77800847016² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77800847017) 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, 128985 + ... + 415016.

It is an arithmetic number, because the mean of its divisors is an integer number (3121211475).

Almost surely, 2^77800847016 is an apocalyptic number.

It is an amenable number.

77800847016 is an abundant number, since it is smaller than the sum of its proper divisors (121956687384).

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

77800847016 is a wasteful number, since it uses less digits than its factorization.

77800847016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544170 (or 544166 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The spelling of 77800847016 in words is "seventy-seven billion, eight hundred million, eight hundred forty-seven thousand, sixteen".