79978407050 has 24 divisors (see below), whose sum is σ = 149201292396. Its totient is φ = 31896426240.

The previous prime is 79978407037. The next prime is 79978407071. The reversal of 79978407050 is 5070487997.

It can be written as a sum of positive squares in 6 ways, for example, as 48464701609 + 31513705441 = 220147^2 + 177521^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2356397 + ... + 2390096.

Almost surely, 2^79978407050 is an apocalyptic number.

79978407050 is a deficient number, since it is larger than the sum of its proper divisors (69222885346).

79978407050 is a wasteful number, since it uses less digits than its factorization.

79978407050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746842 (or 4746837 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 56.

The spelling of 79978407050 in words is "seventy-nine billion, nine hundred seventy-eight million, four hundred seven thousand, fifty".