77735153213842 has 8 divisors (see below), whose sum is σ = 117086558575932. Its totient is φ = 38706300355200.

The previous prime is 77735153213813. The next prime is 77735153213849. The reversal of 77735153213842 is 24831235153777.

It can be written as a sum of positive squares in 2 ways, for example, as 77614848985041 + 120304228801 = 8809929^2 + 346849^2 .

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

It is not an unprimeable number, because it can be changed into a prime (77735153213849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80638125259 + ... + 80638126222.

Almost surely, 2^{77735153213842} is an apocalyptic number.

77735153213842 is a deficient number, since it is larger than the sum of its proper divisors (39351405362090).

77735153213842 is a wasteful number, since it uses less digits than its factorization.

77735153213842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161276251724.

The product of its digits is 29635200, while the sum is 58.

The spelling of 77735153213842 in words is "seventy-seven trillion, seven hundred thirty-five billion, one hundred fifty-three million, two hundred thirteen thousand, eight hundred forty-two".