77218214324 has 6 divisors (see below), whose sum is σ = 135131875074. Its totient is φ = 38609107160.

The previous prime is 77218214299. The next prime is 77218214401. The reversal of 77218214324 is 42341281277.

It can be written as a sum of positive squares in only one way, i.e., 75140677924 + 2077536400 = 274118^2 + 45580^2 .

It is a super-3 number, since 3×77218214324³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9652276787 + ... + 9652276794.

It is an arithmetic number, because the mean of its divisors is an integer number (22521979179).

Almost surely, 2^77218214324 is an apocalyptic number.

It is an amenable number.

77218214324 is a deficient number, since it is larger than the sum of its proper divisors (57913660750).

77218214324 is a wasteful number, since it uses less digits than its factorization.

77218214324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19304553585 (or 19304553583 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The spelling of 77218214324 in words is "seventy-seven billion, two hundred eighteen million, two hundred fourteen thousand, three hundred twenty-four".