7997424275890 has 32 divisors (see below), whose sum is σ = 16543753994880. Its totient is φ = 2726655742464.

The previous prime is 7997424275879. The next prime is 7997424275903. The reversal of 7997424275890 is 985724247997.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319118527 + ... + 319143586.

It is an arithmetic number, because the mean of its divisors is an integer number (516992312340).

Almost surely, 2^{7997424275890} is an apocalyptic number.

7997424275890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7997424275890 is an abundant number, since it is smaller than the sum of its proper divisors (8546329718990).

7997424275890 is a wasteful number, since it uses less digits than its factorization.

7997424275890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638262306.

The product of its (nonzero) digits is 640120320, while the sum is 73.

The spelling of 7997424275890 in words is "seven trillion, nine hundred ninety-seven billion, four hundred twenty-four million, two hundred seventy-five thousand, eight hundred ninety".