99768020049 has 12 divisors (see below), whose sum is σ = 144298740612. Its totient is φ = 66424608000.

The previous prime is 99768020041. The next prime is 99768020081. The reversal of 99768020049 is 94002086799.

It can be written as a sum of positive squares in 2 ways, for example, as 5838029649 + 93929990400 = 76407^2 + 306480^2 .

It is not a de Polignac number, because 99768020049 - 2³ = 99768020041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99768019977 and 99768020004.

It is not an unprimeable number, because it can be changed into a prime (99768020041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7276552 + ... + 7290249.

It is an arithmetic number, because the mean of its divisors is an integer number (12024895051).

Almost surely, 2^99768020049 is an apocalyptic number.

It is an amenable number.

99768020049 is a deficient number, since it is larger than the sum of its proper divisors (44530720563).

99768020049 is a wasteful number, since it uses less digits than its factorization.

99768020049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14567568 (or 14567565 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 99768020049 in words is "ninety-nine billion, seven hundred sixty-eight million, twenty thousand, forty-nine".