20795199287 has 4 divisors (see below), whose sum is σ = 21889683480. Its totient is φ = 19700715096.

The previous prime is 20795199259. The next prime is 20795199307. The reversal of 20795199287 is 78299159702.

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

It is a cyclic number.

It is not a de Polignac number, because 20795199287 - 2⁶ = 20795199223 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 (20795199487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547242068 + ... + 547242105.

It is an arithmetic number, because the mean of its divisors is an integer number (5472420870).

Almost surely, 2^20795199287 is an apocalyptic number.

20795199287 is a deficient number, since it is larger than the sum of its proper divisors (1094484193).

20795199287 is a wasteful number, since it uses less digits than its factorization.

20795199287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094484192.

The product of its (nonzero) digits is 5715360, while the sum is 59.

The spelling of 20795199287 in words is "twenty billion, seven hundred ninety-five million, one hundred ninety-nine thousand, two hundred eighty-seven".