77238380146 has 8 divisors (see below), whose sum is σ = 117444660444. Its totient is φ = 38090160000.

The previous prime is 77238380059. The next prime is 77238380201. The reversal of 77238380146 is 64108383277.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71896378225 + 5342001921 = 268135^2 + 73089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77238380146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264514855 + ... + 264515146.

Almost surely, 2^77238380146 is an apocalyptic number.

77238380146 is a deficient number, since it is larger than the sum of its proper divisors (40206280298).

77238380146 is a wasteful number, since it uses less digits than its factorization.

77238380146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529030076.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 77238380146 in words is "seventy-seven billion, two hundred thirty-eight million, three hundred eighty thousand, one hundred forty-six".