77144652274 has 16 divisors (see below), whose sum is σ = 125835317208. Its totient is φ = 35322193152.

The previous prime is 77144652259. The next prime is 77144652341. The reversal of 77144652274 is 47225644177.

It can be written as a sum of positive squares in 4 ways, for example, as 68709515625 + 8435136649 = 262125^2 + 91843^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30660369 + ... + 30662884.

Almost surely, 2^77144652274 is an apocalyptic number.

77144652274 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

77144652274 is a deficient number, since it is larger than the sum of its proper divisors (48690664934).

77144652274 is a wasteful number, since it uses less digits than its factorization.

77144652274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61323309.

The product of its digits is 2634240, while the sum is 49.

The spelling of 77144652274 in words is "seventy-seven billion, one hundred forty-four million, six hundred fifty-two thousand, two hundred seventy-four".