7824768206642 has 16 divisors (see below), whose sum is σ = 11749035123000. Its totient is φ = 3908423608320.

The previous prime is 7824768206639. The next prime is 7824768206693. The reversal of 7824768206642 is 2466028674287.

It can be written as a sum of positive squares in 4 ways, for example, as 7713511937041 + 111256269601 = 2777321^2 + 333551^2 .

It is a super-2 number, since 2×7824768206642² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38672234 + ... + 38874042.

Almost surely, 2^{7824768206642} is an apocalyptic number.

7824768206642 is a deficient number, since it is larger than the sum of its proper divisors (3924266916358).

7824768206642 is a wasteful number, since it uses less digits than its factorization.

7824768206642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221341.

The product of its (nonzero) digits is 86704128, while the sum is 62.

The spelling of 7824768206642 in words is "seven trillion, eight hundred twenty-four billion, seven hundred sixty-eight million, two hundred six thousand, six hundred forty-two".