83828199901 has 4 divisors (see below), whose sum is σ = 84570042492. Its totient is φ = 83086357312.

The previous prime is 83828199869. The next prime is 83828199919. The reversal of 83828199901 is 10999182838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24060663225 + 59767536676 = 155115^2 + 244474^2 .

It is a cyclic number.

It is not a de Polignac number, because 83828199901 - 2⁵ = 83828199869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83828191901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370921126 + ... + 370921351.

It is an arithmetic number, because the mean of its divisors is an integer number (21142510623).

Almost surely, 2^83828199901 is an apocalyptic number.

It is an amenable number.

83828199901 is a deficient number, since it is larger than the sum of its proper divisors (741842591).

83828199901 is a wasteful number, since it uses less digits than its factorization.

83828199901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741842590.

The product of its (nonzero) digits is 2239488, while the sum is 58.

The spelling of 83828199901 in words is "eighty-three billion, eight hundred twenty-eight million, one hundred ninety-nine thousand, nine hundred one".