77324213800 has 48 divisors (see below), whose sum is σ = 185978079900. Its totient is φ = 29863142400.

The previous prime is 77324213789. The next prime is 77324213801. The reversal of 77324213800 is 831242377.

It can be written as a sum of positive squares in 6 ways, for example, as 8521874596 + 68802339204 = 92314^2 + 262302^2 .

It is a super-2 number, since 2×77324213800² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77324213800.

It is not an unprimeable number, because it can be changed into a prime (77324213801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6660081 + ... + 6671680.

Almost surely, 2^77324213800 is an apocalyptic number.

It is an amenable number.

77324213800 is an abundant number, since it is smaller than the sum of its proper divisors (108653866100).

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

77324213800 is a wasteful number, since it uses less digits than its factorization.

77324213800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13331806 (or 13331797 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 77324213800 in words is "seventy-seven billion, three hundred twenty-four million, two hundred thirteen thousand, eight hundred".