802495642789 has 4 divisors (see below), whose sum is σ = 828382599040. Its totient is φ = 776608686540.

The previous prime is 802495642787. The next prime is 802495642807. The reversal of 802495642789 is 987246594208.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 802495642789 - 2¹ = 802495642787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 802495642789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802495642787) 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, 12943478079 + ... + 12943478140.

It is an arithmetic number, because the mean of its divisors is an integer number (207095649760).

Almost surely, 2^802495642789 is an apocalyptic number.

It is an amenable number.

802495642789 is a deficient number, since it is larger than the sum of its proper divisors (25886956251).

802495642789 is a wasteful number, since it uses less digits than its factorization.

802495642789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25886956250.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 802495642789 in words is "eight hundred two billion, four hundred ninety-five million, six hundred forty-two thousand, seven hundred eighty-nine".