39898728801 has 12 divisors (see below), whose sum is σ = 57815627428. Its totient is φ = 26514169344.

The previous prime is 39898728787. The next prime is 39898728823. The reversal of 39898728801 is 10882789893.

It can be written as a sum of positive squares in 2 ways, for example, as 2688318801 + 37210410000 = 51849^2 + 192900^2 .

It is not a de Polignac number, because 39898728801 - 2⁵ = 39898728769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39898728871) 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, 7078960 + ... + 7084593.

Almost surely, 2^39898728801 is an apocalyptic number.

It is an amenable number.

39898728801 is a deficient number, since it is larger than the sum of its proper divisors (17916898627).

39898728801 is a wasteful number, since it uses less digits than its factorization.

39898728801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14163872 (or 14163869 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 63.

The spelling of 39898728801 in words is "thirty-nine billion, eight hundred ninety-eight million, seven hundred twenty-eight thousand, eight hundred one".