77245322144 has 24 divisors (see below), whose sum is σ = 152166449988. Its totient is φ = 38599874560.

The previous prime is 77245322107. The next prime is 77245322153. The reversal of 77245322144 is 44122354277.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71406528400 + 5838793744 = 267220^2 + 76412^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 656927 + ... + 765534.

Almost surely, 2^77245322144 is an apocalyptic number.

It is an amenable number.

77245322144 is a deficient number, since it is larger than the sum of its proper divisors (74921127844).

77245322144 is a wasteful number, since it uses less digits than its factorization.

77245322144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424168 (or 1424160 counting only the distinct ones).

The product of its digits is 376320, while the sum is 41.

The spelling of 77245322144 in words is "seventy-seven billion, two hundred forty-five million, three hundred twenty-two thousand, one hundred forty-four".