772668128724242 has 8 divisors (see below), whose sum is σ = 1198967785951500. Its totient is φ = 373012200073744.

The previous prime is 772668128724227. The next prime is 772668128724251. The reversal of 772668128724242 is 242427821866277.

It can be written as a sum of positive squares in 2 ways, for example, as 764610927256801 + 8057201467441 = 27651599^2 + 2838521^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6660932144117 + ... + 6660932144232.

Almost surely, 2^{772668128724242} is an apocalyptic number.

772668128724242 is a deficient number, since it is larger than the sum of its proper divisors (426299657227258).

772668128724242 is a wasteful number, since it uses less digits than its factorization.

772668128724242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321864288380.

The product of its digits is 404619264, while the sum is 68.

The spelling of 772668128724242 in words is "seven hundred seventy-two trillion, six hundred sixty-eight billion, one hundred twenty-eight million, seven hundred twenty-four thousand, two hundred forty-two".